301 And 262-Foot NEOs Will Closely Approach Earth On Wednesday

KEY POINTS

  • Two giant asteroids will pass Earth on Oct. 14
  • Both 2020TD and 2020TU2 have not been included in the ESA’s Risk List
  • 2020TO2 will make its next close approach two years from now

Two giant near-Earth asteroids will make their closest approach this Wednesday with Earth, with each about four times the size of The Great Sphinx of Giza in Egypt.

Asteroids 2020TD and 2020TU2 are on currently on their way to zip by the Earth on Oct. 14, Wednesday. The first of the two to pass by is 2020TD  at 10:14 a.m. EDT. Considered an Apollo asteroid, this near-Earth asteroid has an earth-crossing orbit.  At a certain point, its orbit makes contact with that of the Earth’s, making the chances of a possible impact between the two significantly higher. According to NASA’s Center for Near-Earth Object Studies, 2020TD will have a diameter of about 262 feet (80

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Asteroid Bennu Could Shed Light on How Ingredients for Life Reached Earth | Smart News

A series of studies published last week in the journals Science and Science Advances offer a new, detailed look at the makeup of a small asteroid called Bennu. The studies come just before NASA’s OSIRIS-REx spacecraft plans to pick up a sample from the asteroid’s surface on October 20 and return with it to Earth in 2023.

Before the OSIRIS-REx spacecraft reached the asteroid in 2018, astronomers could only study it with telescopes that couldn’t make out details smaller than cities or states, Michael Greshko reports for National Geographic. OSIRIS-REx allows astronomers to map details the size of basketball courts, sheets of paper and postage stamps, depending on the imaging tool they used.

“The reason there’s so much interest in asteroids is a lot of them are very primitive, from when the Solar System formed, and they didn’t change with wind and water, or weather like on Earth,” planetary

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Apple’s rare earth recycling steps up environmental response

Apple said Tuesday its newest iPhones would be produced using recycled rare earth materials, as part of a stepped up environmental initiative which also has geopolitical implications.

Announced as part of a series of sustainability actions, Apple said the move builds on prior initiatives including its pledge to become “100 percent carbon neutral” in all aspects of its business.

Apple’s environment policy chief Lisa Jackson said during an online event announcing the new iPhone 12 handsets that “for the first time, we are using 100 percent recycled rare earth elements in all magnets including the camera, haptics and MagSafe (connectors).”

The announcement comes amid growing concerns about e-waste from billions of smartphones as consumers upgrade to new models, and with growing political tensions over rare earth materials needed for many electronics.

Activists have expressed concerns about the environmental impact of rare earth mining, and some of the materials come from

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The mountains of Pluto are snowcapped, but not for the same reasons as on Earth

The mountains of Pluto are snowcapped, but not for the same reasons as on Earth
At left, the “Cthulhu” region near Pluto’s equator, at right the Alps on Earth. Two identical landscapes created by highly different processes. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute, Thomas Pesquet/ESA

In 2015, the New Horizons space probe discovered spectacular snowcapped mountains on Pluto, which are strikingly similar to mountains on Earth. Such a landscape had never before been observed elsewhere in the Solar System. However, as atmospheric temperatures on our planet decrease at altitude, on Pluto they heat up at altitude as a result of solar radiation.

So where does this ice come from? An international team led by CNRS scientists1 conducted this exploration. They first determined that the “snow” on Pluto’s mountains actually consists of frozen methane, with traces of this gas being present in Pluto’s atmosphere, just like water vapor on Earth. To understand how the same landscape could be produced in such different conditions,

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Study Suggests A Supernova Exploded Near Earth About 2.5 Million Years Ago, Possibly Causing An Extinction Event

Supernovas are amazingly bright explosions of massive stars at the end of their lives. During the gravitational collapse, the outer layers of the star are pushed away, and chemical elements formed inside the star are released into space. This cosmic dust rains down onto the Earth continuously, including exotic elements formed inside the dying star.

Research published in the journal Physical Review Letters used the concentration of two such exotic elements preserved in ocean sediments to hypothesize that a supernova exploded near Earth just 2.5 million years ago.

The authors, led by Dr. Gunther Korschinek from the Technical University of Munich, focused their study on ferromanganese crusts collected in the Pacific Ocean.

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Two Massive Asteroids, 1 Smaller NEA To Zip Past Earth On Tuesday

KEY POINTS

  • The NEAs will pass by Earth on Tuesday, Oct. 13
  • 2018GD2 has been included in the ESA’s Risk List
  • 2020TN3 is expected to be three times as big as the Statue of Liberty in New York

A total of three Near-Earth Asteroids (NEA) are expected to pass by the planet this Tuesday in varying times, the same day when Mars will be in opposition. One of the NEAs to zip by is three times the size of the Statue of Liberty in New York.

The first of the three to zip past Earth on Tuesday is also the largest. 2020TN3 is about 278 ft in diameter and is expected to zip by early in the morning, at 5:12 a.m. EDT. The giant asteroid will be three times the size of the Statue of Liberty. NASA’s Center for Near Earth Object Studies claims the NEA will be flying by

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China’s Mars Probe Tianwen-1 Sends Home Selfies Captured 15 Million Miles From Earth

KEY POINTS

  • The CNSA released new selfies of Tianwen-1 captured 15 million miles away from Earth
  • The Mars probe took images of itself using a tiny camera ejected from the spacecraft
  • Tianwen-1 is expected to reach the red planet in February 2021

Talk about a clever way to take self-portraits in space! Tianwen-1 has snapped some selfies while in outer space using a camera ejected from its spacecraft.

While on its way to Mars, Tianwen-1 sent home new images of itself captured 15 million miles away from Earth. They were released by the China National Space Administration earlier this month as part of the country’s national day celebrations.

The small camera the Mars probe used to snap selfies had wide-angle lenses on each side and took one photo every second. It sends the images it takes to Tianwen-1, which would then transmit the pictures to Earth.

One of the many

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Elon Musk has ‘seen no evidence of an advanced civilization visiting Earth’

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Elon Musk tweeted this scenic view of the Starship SN5 prototype in mid-air in August. This is an identified flying object.


Elon Musk/SpaceX

The truth is out there, and Elon Musk is sure it has nothing to do with aliens visiting Earth. 

The SpaceX founder chimed in on the idea of UFO sightings through a couple of tweets on Sunday. “I have seen no evidence of an advanced civilization visiting Earth,” he tweeted. “Fuzzy pics that are worse than a 7/11 security cam frame grab don’t count!”

Musk was responding to a tweet from Fox television anchor Maria Bartiromo. She shared a clip from Sunday in which she asked President Donald Trump why earlier this year

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New Theory Suggests Tunguska Explosion Was A 656 Foot-Wide Asteroid’s Near-Miss With Earth

In the morning of June 30, 1908, the ground trembled in Central Siberia, and a series of flying fireballs, causing a “frightful sound” of explosions, were observed in the sky above the Stony Tunguska River. Strange glowing clouds, colorful sunsets, and a weak luminescence in the night were reported as far as Europe.

Likely many thousand people in a radius of 1.500 kilometers (or 900 miles) observed the Tunguska Event. However, due to the remoteness of the affected area, eyewitness testimonies were collected only more than half of a century after the event, and most were second-hand oral accounts. In 2008, unpublished material collected by Russian ethnographer Sev’yan Vainshtein resurfaced, including some first-hand accounts of the event.

Despite its notoriety in pop-culture, hard scientific data covering the Tunguska Event is sparse. Since 1928 more than forty expeditions explored

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Geologists solve puzzle that could predict valuable rare earth element deposits

Geologists solve puzzle that could predict valuable rare earth element deposits
Pioneering new research has helped geologists solve a long-standing puzzle that could help pinpoint new, untapped concentrations of some the most valuable rare earth deposits. Credit: Michael Anenburg, ANU.

Pioneering new research has helped geologists solve a long-standing puzzle that could help pinpoint new, untapped concentrations of some the most valuable rare earth deposits.


A team of geologists, led by Professor Frances Wall from the Camborne School of Mines, have discovered a new hypothesis to predict where rare earth elements neodymium and dysprosium could be found.

The elements are among the most sought after, because they are an essential part of digital and clean energy manufacturing, including magnets in large wind turbines and electric cars motors.

For the new research, scientists conducted a series of experiments that showed sodium and potassium—rather than chlorine or fluorine as previously thought—were the key ingredients for making these rare earth elements soluble.

This is

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