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Five Asteroids In 3 Days! A Barrage Of Space Rocks Are Heading Toward Earth This Week

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Five asteroids of varying sizes are set for a close encounter with Earth in the next two days. NASA’s Center For Near-Earth Object Studies (CNEOS) has revealed that the smallest of them measures between roughly 4.5 to 10 meters in diameter whereas the biggest of them is about 32 to 73 meters.

The data has revealed that the smallest – 2008 LD – will be approximately 29.5 lakh km from Earth at the time of the fly by. It is travelling at a speed more than 16,000 km per hour.

Orbit of asteroid 2024 JV17. Image: NASA

The biggest of the five – the 2024 JV17 – will be approximately 66 lakh km away at the time of the closest approach while travelling at over 30,000 km per hour. Both these space rocks will fly past Earth on May 28.

ALSO SEE: Like Dinosaurs, Humans Will Become Extinct If A Single Asteroid Collides; ‘Asteroid Rush’ Trailer Proves Just That

The other asteroids – the 2021 LV (between 7-15 meters wide) and 2024 JG (between 22-50 meters) will get close to our planet on May 29.

Orbit of asteroid JO16. Image: NASA

There will be a close encounter today as well when the asteroid 2024 JO16 flies past Earth. According to the CNEOS data, it will be about 30 lakh km from our planet and will be travelling at more than 30,000 km per hour.

As the data suggests, there is no need to worry since the asteroids will fly from a safe distance from our planet. Besides, their size except for a few relatively big ones is also not a cause for concern.

ALSO SEE: Lack Of Earth’s Resources Can Be Fulfilled By Asteroids – And A US Firm Wants To Mine Them

(Image: Unsplash)



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Greenhouse Gases Are Alerting Oceans ‘Before Our Eyes,’ Says NASA

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NASA has shared a stunning yet concerning visualisation of sea surface currents and how they are being altered due to global warming. The visualisation depicts the average temperatures of ocean currents and how they differ at different locations.

The warmer hues such as red, orange, and yellow indicate higher temperatures, and cooler shades like green and blue represent lower temperatures.

“With 70% of the planet covered by water, the seas are important drivers of Earth’s global climate. Yet, increasing greenhouse gases from human activities are altering the ocean before our eyes,” the agency captioned the post.

According to NASA, 90 percent of the planet’s warming occurs within the ocean. Since modern recordkeeping began in 1955, the internal heat of the ocean has steadily increased, contributing significantly to climate change.

ALSO SEE: World’s Oceans Are Losing Their “Memory” As A Result Of Global Warming, Experts Claim

The heat stored in the ocean leads to thermal expansion, a process where water expands as it warms. This phenomenon is a major contributor to global sea level rise, accounting for one-third to one-half of the increase.

Scientists say the majority of this heat is concentrated at the surface, within the top 700 meters of the ocean. According to existing records, the past decade has been the warmest for the ocean since at least the 1800s, with 2023 marking the highest recorded ocean temperatures to date.

ALSO SEE: Arctic Ocean Warming Started Decades Earlier Than Previously Thought

The warming of the ocean has far-reaching effects. One of the most visible impacts is the rise in sea levels, primarily due to thermal expansion. Warmer waters have also led to widespread coral bleaching, which affects marine ecosystems and the increased temperatures also accelerate the melting of Earth’s major ice sheets.

NASA says that the warming ocean intensifies hurricanes affect ocean health and biochemistry, altering marine life habitats and disrupting food chains.





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NASA Shares Incredible Picture Of ‘Space Potato’ Phobos; It Will Soon Crash Into Mars

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Ever seen a space potato? NASA is here to treat you with one. The agency has shared a fascinating image of Phobos, the larger of two moons of Mars, explaining what makes this object so intriguing.

Meauring just 27 by 22 by 18 kilometres in diameter, Phobos orbits Mars about 6,000 km above the red planet’s surface and it is on a collision course with Earth.

This is the closest any Moon orbits a planet and Phobos might crash into Mars in the future. Scientists estimate that this is likely to happen within 50 million years. Another likely scenario of Phobos’ end will be its potential obliteration into pieces, eventually forming a ring around Mars.

According to NASA, Phobos is nearing Mars at the rate of six feet each year.

ALSO SEE: We May Have Been Wrong About Martian Moon Phobos’ Origin, It Could Be A Comet

Phobos (left) and Deimos (right). Image: NASA

Describing the image, the agency said that it was taken by the High Resolution Imaging Science Experiment (HiRISE) camera on the Mars Reconnaissance Orbiter, which has been studying Mars since 2006.

Phobos was discovered along with its twin just six days apart by astronomer Asaph Hall in 1877.

ALSO SEE: ISRO’s Mangalyaan Presents Breathtaking Video Of Martian Moon ‘Phobos’

The Moon also has several craters but the most dominant one is the 10-km-wide Stickeny crater which Hall named after his wife Angelina.

The second moon is Deimos which measures 15 by 12 by 11 kilometres and orbits the red planet every 30 hours. Both the moons are named after the mythological sons of Ares, the Greek counterpart of the Roman god. Phobos means fear and Deimos means dread, says NASA. As for their origin, astronomers believe they could be asteroids or debris caught by Mars in the early solar system.

(Image: NASA)





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Rare ‘Gigantic Jets’ Spotted Above The Himalayas, NASA Shares Viral Picture

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NASA recently shared a captivating image of gigantic jets soaring from a thunderstorm toward the Himalayan Mountains in China and Bhutan. This composite image, featured in NASA’s Astronomy Picture of the Day segment on June 18, reveals four immense jets captured within minutes of each other.

Gigantic jets are a rare and fascinating type of lightning discharge that have only been documented since the early 2000s. Unlike conventional lightning that occurs between clouds or strikes the ground, gigantic jets bridge the gap between thunderstorms and the Earth’s ionosphere, the layer of the atmosphere that is ionised by solar and cosmic radiation, NASA said.

Jets of lightning spotted over the Himalayas. Image: NASA/Li Xuanhua

These jets are unique in their appearance and behavior, differing significantly from traditional lightning phenomena.

ALSO SEE: Webb Telescope Photographs Baby Stars Burping Out Gases For The First Time

Despite their visual grandeur, the precise mechanisms and triggers behind gigantic jets are still under investigation. What is known is that these jets help to balance electrical charges between different layers of the Earth’s atmosphere, playing a crucial role in maintaining the atmospheric electrical circuit.

For those interested in observing this phenomenon, a powerful but distant thunderstorm viewed from a clear vantage point offers the best chance.

As these jets typically shoot upwards from the storm tops into the ionosphere, they can often be seen from hundreds of kilometers away under the right conditions.

ALSO SEE: NASA Shares First Cosmic Image Of 2024 And It’s Exploding With Stars



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