COMBATING POLLUTION

Space debris

Space above Earth is turning progressively crowded. Space debris, or orbital debris, refers to the accumulation of non-operational items around Earth’s orbit, including old satellites, rocket stages that no longer operate, and pieces from collisions or explosions. As the number of space constellations and exploration grows at a never-before-seen rate, one question becomes important about space junk: This debris itself poses a great degree of danger to operational satellites, space missions, and other future exploratory undertakings. In these respects, battling orbital pollution is actually of the essence in order to guarantee that space operations are sustained appropriately for future generations.

Space debris refers to any human-made object that is no longer serving its functional purpose but still in Earth’s orbit. The sizes vary from tiny paint flecks to large and derelict satellites. The majority of the debris is housed in what is termed the Low Earth Orbit, which extends up to 2,000 kilometers above Earth’s surface. It is, particularly, pretty congested, as it is where most of the satellite operations take place: communication, Earth observation, and scientific research, among others. Some of the reasons why such buildups of space debris occur include the following: failed spacecraft, spent rocket stages, and fragments from explosions or collisions. The first significant awareness of the problem was the collision between the defunct Russian satellite Kosmos-2251 and an operational Iridium communications satellite back in 2009, adding several thousand fragments of debris into LEO. Since that accident happened, things have only gotten worse due to the increased number of launches.

Space debris poses a number of different risks to current and future space operations. Active satellites, space stations, and manned missions face the risk of being hit by debris with velocity mostly exceeding the speed of 28,000 kilometers per hour. In such great speed, even small fragments may cause serious damage: a paint chip is able to puncture the surface of a spacecraft, and collision with a big piece can destroy the whole satellite, thus contributing to the problem of debris. The Kessler Syndrome (1978), theorized by NASA scientist Donald Kessler, is an exponential growth cascade where space debris collides with satellites and other debris, creating fragments that collide further until possibly rendering parts of space unusable for decades or longer. Not yet collective, the Kessler Syndrome is a reason for concern due to the growing density of objects in LEO, which should be met with proactive measures.

Recently, the efforts to reduce space debris have been gaining momentum. Most of the efforts now go toward prevention rather than removal of debris. International guidelines such as those by UNOOSA and IADC, for instance, recommend designing satellites in such a way that they can deorbit no longer than 25 years after the end of their mission. This is often done by lowering their orbits so their re-entry into the atmosphere causes them to burn up. 

In addition, satellite operators are also summoned to carry out end-of-life maneuvers that safely remove those spacecraft from operational orbits. For geostationary satellites, that normally includes separation in a “graveyard orbit,” a place far away from the critical orbital zones where those defunct satellites can stay in without interfering with operational spacecraft.

While prevention is paramount, guidelines and best practices alone cannot solve the issue of the already existing debris.

ANCIENT LANGUAGES RICH IN LITERATURE

Classical Languages

The Union Cabinet has recently approved giving the status of ‘classical language’ to five more languages - Marathi, Bengali, Pali, Prakrit, and Assamese. With this cabinet decision, the number of languages that have the status will nearly double from six to 11. The languages that had the tag earlier were Tamil, Sanskrit, Telugu, Kannada, Malayalam, and Odia. Tamil was granted the status in 2004 and the last language to get it was Odia, in 2014. Prakrit and Pali are two distinct languages that have been derived from Sanskrit.

What is the criteria for a language to be recognised as classical?

The following criteria have to be met:

● High antiquity of the language’s early texts/recorded history over a period of 1,500-2,000 years.

● A body of ancient literature/texts, which is considered a heritage by generations of speakers.

● Knowledge texts, especially prose texts in addition to poetry, epigraphical and inscriptional evidence.

● The classical languages and literature could be distinct from their current form or could be discontinuous with later forms of their offshoots.

CAMPAIGNS, VOTES AND ELECTIONS

To elect the President of America

Every four years, US citizens cast their vote for the person they think should hold the coveted position of president of their country.

In 2024, another election is on the horizon, when the nation will decide if Democratic nominee Kamala Harris or Republican Donald Trump will be the next president to hold office. At the ballot box, Americans make their decision on who they think should be the next person to run the country. However, they’re not directly voting for the next president. Instead, they’re voting for members of the Electoral College, called ‘electors’, whose job it is to elect the president and the vice president. According to the American Constitution, electors can’t be members of Congress or hold federal office and are elected by political parties.

Each state has its own number of electors, based on the state’s resident population. The more citizens in the state, the more electors that state holds. For example, California has more than 40 million inhabitants and 55 electors, whereas Wyoming only has around 500,000 residents and just three electors. All but two states have a winner-takes-all policy, where all the state’s electoral votes are given to the candidate that wins the state’s popular vote. Maine and Nebraska differ by distributing electors within their congressional districts, along with two ‘at-large’ electoral votes based on the overall state-wide popular vote. Electors often pledge to their states to vote for the same presidential nominee as the result of their state’s popular vote. However, that hasn’t always been the case. There have been 157 ‘faithless electors’ who, when faced with casting their electoral vote, have chosen an alternative candidate. There have been several reasons why an elector has changed their vote, including the death of a nominee, a change in candidate within the same party or, in one case, by accident. In 1796, a Federalist elector from Pennsylvania intentionally switched their vote from Federalist nominee John Adams to Democratic-Republican Thomas Jefferson.

All in all, there are 538 electors across the country – equal to the number of House Representatives and Congress members – and a further three votes for the District of Columbia, that decide the next president. The candidate with more than half of the votes (270) wins the presidency. If on the rare occasion a single candidate doesn’t get more than 270 votes, then the House of Representatives elects the president. The two-stage voting system of the Electoral College can result in a unique situation where a candidate can win the votes of the electors, despite not winning the popular vote from all 50 states. For example, in 2016 Donald Trump won the electoral vote against Democratic nominee Hillary Clinton but lost the popular vote by more than 2 million votes.

Despite its intricacies, the Electoral College has served the American people for 237 years. Having broken away from the royal rule of Great Britain during the 18th century, the infant nation of America wasn’t in a hurry to live under a dictatorship. As a solution to electing a new leader and government, the Electoral College was conceived by America’s Founding Fathers at a time when the majority of the world’s countries didn’t hold democratic elections. Political pioneers such as George Washington and Alexander Hamilton debated a new way to elect a presidential leader during the Constitutional Convention in Philadelphia in 1787. While many of the attending delegates wanted a congress to elect a president, others believed that a popular democratic vote should decide who was put into power. As a compromise between the two ideas, the Electoral College was born.

The Electoral College system was ratified with the Constitution in 1789. However, since then there have been a whole host of amendments that have changed who and how people vote for the president of the United States. For example, in 1804 the 12th Amendment to the Constitution changed the way that vice presidents were elected.

Originally, the position of vice president was held by the runner-up in the general election, who was seen as the second most qualified candidate for president. The 12th Amendment made it possible for the public to elect a vice president, rather than the position being automatically filled. In 1868 the 14th Amendment gave African Americans the right to vote, and the 19th Amendment gave women the right to vote in 1920. In 1971, the 26th Amendment lowered the voting age from 21 to 18 years old.

To date, there have been 46 US presidencies served by 45 men – this is due to President Grover Cleveland’s two nonconsecutive terms as the 22nd and 24th president. Only two women have ever been put forward as a presidential nominee. Hillary Clinton was the first female nominee during the 2016 election, and current vice president Kamala Harris is the second during the 2024 race. Could 2024 be the year that history is made with the first female to step into the iconic Oval Office as president of the United States? The world will find out after voting takes place on 5 November 2024 during the 60th quadrennial presidential election.

A CELEBRATION OF TOGETHERNESS

 Through community meals 

What's unique about Chandanki, a village in Gujarat? Here, food isn’t cooked in any house. Instead, food for everyone is prepared in one place, where all the residents gather to sit and eat together. This is Chandanki’s antidote to loneliness. 

With a majority of its youngsters migrating to cities in India and abroad, Chandanki was left with a large number of senior citizens. A decade earlier, it had a population of over a thousand, but today it has around 500 people, most of whom are between 55 and 85 years of age. Many of these elderly people would cook food once a day only. Also, elderly women who had health problems found it hard, if not impossible, to cook meals. 

To address these issues, a group of villagers started a community kitchen. For a small fee, Chandanki’s residents get access to two meals a day prepared by hired cooks. The lunch includes dal, rice, chapatti, sabzi and a dessert. For dinner, there is khichdi, kadhi, bhakri (rotis made from millet) and sabzi. Additionally, namkeen (which includes pakodas made from methi or fenugreek leaves), dhokla and idli-sambar are also served. 

The meals are eaten in a solarpowered air-conditioned hall adjacent to the community kitchen. The dining hall has thus emerged as a space where all the inhabitants of Chandanki gather together and share their joys and sorrows over their meals. During weekends, their grown-up children (who now reside in cities) come to Chandanki to visit them and they too join in the community meals. 

Interestingly, the sarpanch of the village, Poonambhai Patel, left his home in Ahmedabad and moved to Chandanki to supervise the community kitchen properly. The practice of cooking and consuming community meals is not just about food. It is also about strengthening the social fabric of a people and nurturing them. Chandanki’s future plans include constructing a park to further this feeling of togetherness among its inhabitants. 

FATHER OF MODERN GENETICS

Gregor Mendel

Gregor Mendel was an Austrian monk who discovered the basic principles of heredity through experiments in his garden.

Mendel’s observations became the foundation of modern genetics and the study of heredity, and he is widely considered as ‘The Father of Modern Genetics’.

Early Life 

Gregor Johann Mendel was born on July 22, 1822, to Anton and Rosine Mendel, on his family’s farm, in Heinzendorf, Austria. He spent his early youth in that rural setting. In 1840, he graduated from the secondary school in Troppau with honors.

Following his schooling, Mendel graduated from the Philosophical Institute of the University of Olmutz in 1843. That same year, against the wishes of his father, Mendel began studying to be a monk. He joined the Augustinian order at the St. Thomas Monastery.

Scientific Exposure

In 1851, he was sent to the University of Vienna, at the monastery’s expense, to continue his studies in the sciences. While there, Mendel studied mathematics and physics under Christian Doppler, after whom the Doppler effect of wave frequency is named.

He studied botany under Franz Unger, who had begun using a microscope in his studies.

In 1853, upon completing his studies at the University of Vienna, Mendel returned to the monastery in Brno and he began the experiments for which he is best known.

Experiments and Theories

Around 1854, Mendel began to do research on the transmission of hereditary traits in plant hybrids. Mendel’s research continued over as many as eight years and involved tens of thousands of individual plants.

Mendel chose to use peas for his experiments due to their many distinct varieties. After analyzing his results, he reached two of his most important conclusions: the Law of Segregation, which established that there are dominant and recessive traits which were passed on randomly from parents to offspring and the Law of Independent Assortment, which established that traits were passed on independently of other traits from parents to offspring.

In 1865, Mendel delivered two lectures on his findings to the Natural Science Society in Brno. Mendel did little to promote his work. The importance of his work was largely overlooked at that period.

Later life and Legacy

Gregor Mendel died on January 6, 1884, at the age of 61. His work, however, was still largely unknown.

But, decades later, Mendel’s research was recognized by several noted geneticists, botanists, and biologists conducting research on heredity. Its significance was more fully appreciated, and his studies began to be referred to as Mendel’s Laws. His research and theories are considered fundamental to any understanding of the field of genetics, and he is thus considered the ‘Father of Modern Genetics’.

A MARVEL OF ANCIENT INDIA

Rani ka Vav (The Queen’s Stepwell)

Hidden in the small town of Patan in Gujarat, India, lies Rani ka Vav (The Queen’s Stepwell), a breathtaking example of ancient Indian architecture and artistry. This incredible stepwell, built in the 11th century by Queen Udayamati in memory of her husband King Bhimdev I, is a UNESCO World Heritage Site and a symbol of India’s rich cultural heritage.

A Step Back in Time: Rani ka Vav is no ordinary well. Stretching 64 meters long, 20 meters wide, and 27 meters deep, this seven-story marvel showcases over 800 intricate sculptures and carvings. These artworks depict Gods, Goddesses and scenes from Hindu mythology, offering a fascinating glimpse into the past.

Architectural WonderThe design of the stepwell is a masterpiece of engineering. Its precise construction allows natural light and air to reach the deepest levels, creating a cool and serene environment. This ingenious use of space and resources highlights the advanced knowledge of ancient Indian builders.

Cultural Significance: Beyond its beauty, Rani ka Vav is a testament to the love and respect of Queen Udayamati for her husband. It also emphasizes the importance of women in history, showcasing the queen’s role in commissioning and overseeing this grand project. The stepwell reflects the prosperity and artistic flair of the Solanki dynasty.

Educational Treasure: For students, Rani ka Vav offers more than just a history lesson. It provides insights into ancient engineering, art and culture. Visiting or studying this stepwell can inspire appreciation for historical monuments and the importance of preserving them.

Rani ka Vav is not just a stepwell; it is a gateway to India’s glorious past. Each carving and structure tells a story, inviting us to explore and cherish our heritage. This magnificent stepwell stands as a reminder of our ancestors’ creativity and ingenuity, encouraging us to preserve such treasures for future generations.

KING OF THE PLANETS

 Jupiter 

Large enough to fit every other planet inside, it’s no surprise Jupiter holds the title of “King of the planets”.

Last year the European Space Agency sent the Jupiter Icy Moons Explorer (JUICE for short) on the long journey towards the planet, and this October NASA will launch the Europa Clipper to join it on its way. The trip will take five and a half years, because Jupiter lies around 484 million miles from the Sun – five times further away than Earth.

With its century-long storms, deadly radiation and a glittering assortment of moons, the solar system’s largest planet is a fascinating – and deadly – place to visit.

A giant gassy ball: Jupiter is around 86,881 miles wide and it contains more than twice as much mass as every other planet put together. The more material a planet has, the stronger its gravity. So, if you stood on a set of scales on Jupiter you would be nearly two and a half times heavier than you are on Earth. You wouldn’t be any bigger – the planet is just pulling down on you more.

You’d have a tough time standing anywhere on Jupiter though, because it’s a gas giant. The solar system’s inner planets – Mercury, Venus, Earth and Mars – are mostly made of rock, but Jupiter is entirely made of its atmosphere.

The planet is about 90% hydrogen gas, the lightest known element in the universe. Most of the remaining 10% is helium, the gas used to fill balloons so they float. There are also trace amounts of other chemicals, such as water and ammonia (which is used on Earth to make plant fertilisers), which form Jupiter’s clouds.

Jupiter’s outer atmosphere is about 30 miles thick. Below this, there is a layer of hydrogen and helium 13,000 miles thick, which changes from gas to liquid as the depth and pressure increase. Under this lies a deep sea – 25,000 miles deep – of liquid metallic hydrogen.

Scientists don’t yet know if a solid surface exists on Jupiter, but if there is one, you wouldn’t be able to walk on it.

Stormy weather: If you looked at Jupiter through a large enough telescope, you’d see the planet has alternating brown and white stripes running from side to side. These are bands of swirling clouds, moving around the planet in opposite directions. The cream coloured stripes are known as “zones”, while the darker ones are called “belts”.

The belts and zones are created because Jupiter spins incredibly quickly. Pinning down exactly how long the gas giant takes to rotate – and the length of its day – is surprisingly complicated. Because it isn’t solid, different parts of the planet rotate at different speeds. While the equator zips around in just nine hours and 50 minutes, material at the poles takes six minutes longer to catch up. This rapid spinning creates strong currents in the atmosphere, which help create the planet’s distinctive belts and zones.

Dotted among these stripes are bright spots that are white or red. These are immense storms, which can last from a few days to decades. The biggest of them is called the Great Red Spot, and it has been a permanent fixture on the face of Jupiter for over 190 years.

Today, the Spot is 8,700 miles across, wide enough to swallow Earth whole. Violent winds roar at 425 miles per hour, more than double a Category 5 hurricane. The fastest winds, though, are at the poles, where storms whip gusts at over 900 miles per hour.

Jupiter’s most dangerous feature (to spacecraft, at least) is its magnetic field. Around 20,000 times stronger than Earth’s, the field traps charged particles and accelerates them towards the planet. When they strike the atmosphere they make it glow, creating beautiful aurorae (northern and southern lights), that ring the poles like a crown.

Visiting Jupiter: 

The trapped particles also create deadly radiation around the planet. The first spacecraft to visit Jupiter in the 1970s – Pioneer 10 and Pioneer 11 – avoided this by blazing past the planet at 78,000 miles per hour. They found the radiation was 100 times stronger than expected, and it fried several onboard instruments. The next visitors – Voyager 1 and Voyager 2 – in 1979, fared much better. They took 33,000 pictures of Jupiter and its moons, found the planet had a thin ring around its waist like Saturn, and also spotted a volcano erupting on one of Jupiter’s moons, Io.

Other spacecraft have passed the planet on their journeys elsewhere, such as New Horizons on its way to Pluto. Only two have stayed longer, surviving the radiation by spending most of their time at a safe distance from Jupiter and occasionally swinging in for a short visit.

The Galileo spacecraft orbited Jupiter from 1995 to 2003. It spotted bright flashes that turned out to be lightning strikes leaping between the clouds. It even dropped off a probe that fell through the planet’s atmosphere for 58 minutes before it was crushed by the intense pressure. Juno arrived in 2016 and is still watching over the mighty gas giant today. The spacecraft has been mapping out the strength of size of States.

Jupiter’s gravity and magnetic field, hoping to reveal more about what the planet looks like underneath the clouds. It also found evidence of helium rain falling through the layers deep in the atmosphere, where the pressure is so high that hydrogen and helium act like liquids.

A new hope for alien life: When JUICE and Europa Clipper arrive at Jupiter in the 2030s, however, their main focus will be on Jupiter’s moons, rather than the planet itself. Jupiter has 95 moons (that we know of, as new ones are still being discovered), but both missions will focus their attention on three – Europa, Ganymede and Callisto. Mostly made of water ice, each moon is thought to hide a liquid water ocean beneath its surface. On Earth, wherever there’s water there’s life, so the icy moons are great places to look for life beyond Earth.

Neither JUICE nor Europa Clipper are directly searching for alien lifeforms, but they will be looking for signs that the moons could be habitable (possible to live there). In doing so, astrobiologists (scientists who study the origins of life in the universe) hope to understand more about how life might have begun on our own planet and elsewhere in the galaxy.

Jupiter may be the King of the Solar System, but its moons are set to shine in the coming years. Will alien life be finally found in our solar system, hiding on one of Jupiter’s many moons? Watch this space!

Europa Clipper - a journey to an ocean world: NASA's Europa Clipper is set to launch in October 2024 and arrive at Jupiter in April 2030. The spacecraft hopes to unlock some of the secrets of the planet's icy moon Europa and find out if it is capable of hosting alien life. Here are five mysteries the mission is seeking to solve:

1 Salty ocean

The key question scientists want to answer is whether Europa has an ocean of salty water hidden beneath its icy surface, and if so, how big it is. Europa Clipper will use radar to survey under the moon's surface.

2 Ingredients for life

Although scientists are almost certain that a vast ocean lies under Europa's surface, they want to know if it has other essential ingredients for life. The spacecraft will search for these, and investigate whether they come from Europa's icy shell or from the moon's rocky interior.

3 Plumes of water

Water jets have been seen shooting into space from Europa's surface. Europa Clipper will search for these and attempt to fly through one of them to give scientists a glimpse into the ocean beneath.

4 Smooth surface

Europa's surface is the smoothest object in the solar system, with no impact craters. The spacecraft will study the moon's surface to understand what is keeping it so fresh-faced, and whether volcanoes or Jupiter's gravity could provide the energy for life.

5 Landing site

Future missions to Europa might want to land on the surface to study its ocean. During its mission, Europa Clipper will aim to map the moon's surface in detail, allowing NASA to locate the best landing spot.