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In this handout provided by the National Aeronautics and Space Administration, a satellite image shows the far side of the moon as it crosses between the DSCOVR spacecraft and the Earth, at one million miles away.

The moon has been drifting away from Earth for 4.5 billion years. A stunning animation shows how far it has gone.

The video shows how the moon reached its current position after starting as an orb of molten rock and magma hovering just above Earth.
A view of Earth taken by NASA's Earth Polychromatic Imaging Camera.

The first day of fall has arrived. Here’s how the equinox marks the changing of seasons.

The autumnal equinox happened at 3:50 a.m. ET on September 23, 2019. Here's how Earth and the sun work together to change our seasons.
A thick ring of space junk orbits Earth in this fanciful artist's concept of a "Kessler syndrome" event.

Satellite collisions may set off a space-junk disaster that could end human access to space. Here’s how.

Experts worry that debris orbiting Earth could lead to a "Kessler syndrome" domino effect that cuts off human access to space for hundreds of years.
A nuclear blast from Operation Teapot in 1955 at the Nevada Test Site.

Yes, a physicist once lit his cigarette with a nuclear-bomb explosion. Here’s how it worked.

A popular Reddit thread about an "atomic cigarette lighter" seems true. In 1952, the physicist Ted Taylor used a nuclear blast to ignite his smoke.
The first photos of quantum-entangled particles showing a Bell inequality.

A ‘spooky’ effect of physics that Einstein couldn’t believe has been photographed for the first time

The image may not look like much, but it shows a strange property of the universe called quantum entanglement.
Apollo 11 astronaut Buzz Aldrin stands next to a flag on the moon on July 20, 1969.

The American flags astronauts planted on the moon are disintegrating

The sun has likely bleached them all white and at least partly destroyed their fragile fibers, making them tattered and unrecognizable.
Matter Design's swiveling structures.

MIT researchers discovered a way to move objects as heavy as a great white shark with your bare hands. Take a look.

MIT researchers debuted a concept at TED 2019 that allows people to move massively heavy objects by hand.
The video is part of a series of videos from EA that showcase the company's Frostbite engine.

EA made a series of videos meant to showcase its ‘next-gen’ video games, and the results are accidentally horrifying

EA intended to demonstrate the power of its next-generation graphics technology in a new video. Instead, it demonstrated the uncanny valley.
Asteroid 6478 Gault with two narrow, comet-like tails of debris that suggest the space rock is self-destructing.

The Hubble telescope spotted an asteroid that has grown two tails — and scientists think it’s ripping itself to pieces

A 2.5-mile-wide asteroid called Gault was discovered in 1988, but it may not exist as we know it for much longer. The space rock is spinning apart.
A view of Africa taken by Apollo 11 astronauts on July 20, 1969.

The first day of spring is finally here — for about 90% of us. Here’s why equinoxes mark the changing of seasons.

The spring or vernal equinox happens at 5:58 p.m. ET on Wednesday, March 20, 2019. Here's how Earth and the sun work together to change our seasons.