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The asteroid is expected to come within 140,000 miles of Earth — well inside the moon’s orbit.

From size to mass to density and more, each world in our Solar System is unique. When we compare them, the results are truly shocking.

For now, our Solar System’s eight planets are all safe, and relatively stable. Billions of years from now, everything will be different.

Each December, the Geminid meteor shower puts on a show for skywatchers across Earth. With a new Moon at 2023’s peak, it’ll be outstanding!

Meanwhile meteorite hunters rushed to Berlin to find this most rare space rock.

The first tests of optical communications far from Earth will take place aboard the asteroid-bound Psyche spacecraft

Some of them have survived the wilds of space for billions of years.

You can’t throw a DART at everything in space.

Climate and ecological changes, as well as disruptions to the food chain, were already killing off the dinosaurs.

Whether you call it 10 quintillion, 10 million trillion, or 10 billion billion, it’s a 1 followed by 19 zeroes.

The authors call it “wildly theoretical” — but let’s take a look, anyway.

Most asteroids aren’t what you think they are.

Humanity has two giant collisions to thank for its existence, explains biologist Sean B. Carroll.

Watching for changes in the Red Planet’s orbit over time could be new way to detect passing dark matter.

The detection of two celestial interlopers careening through our solar system has scientists eagerly anticipating more.

The largest hazardous asteroid found in the last 8 years showcases a little-known class of planet-killers. And we’re woefully unprepared.

The DART mission tested whether it’s possible to deflect an asteroid by crashing something into it.

The midwest is particularly filled with them.

65 million years ago, a massive asteroid struck Earth. Not only did Jupiter not stop it, but it probably caused the impact itself.

Each year in mid-August, Earth plows through the debris stream of an enormous comet, creating the Perseids. 2023’s show will be magnificent!

Sooner or later, Earth is going to be hit by a large enough space object to cause significant damage to humanity. Stopping them isn’t easy.

The surface of asteroid Bennu is more like a plastic ball pit than the Moon.

We can all sleep a little more soundly.

Can two planets stably share the same orbit? Conventional wisdom says no, but a look at Saturn’s moons might tell a different story.

Many impact craters on Earth have been erased thanks to wind, water, and plate tectonics. But scientists have clever ways to find them.

Earth, the only rocky planet with a large, massive satellite, is greatly affected by the Moon. Destroying it would cause 7 major changes.

Despite billions of years of life on Earth, humans first arose only ~300,000 years ago. It took all that time to make our arrival possible.

Asteroid collisions aren’t always bad.

All the stars, stellar corpses, planets, and other large, massive objects take on spherical or spheroidal shapes. Why is that universal?

The 5th brightest star in our night sky is young, blue, and apparently devoid of massive planets. New JWST observations deepen the mystery.