Space

Diary of an Astronaut: Mike Massimino

Photo Gallery | 9 Photos

Neptune: The (Official) Last Planet

Photo Gallery | 6 Photos

The Death of Black Holes

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According to NASA, "A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying." But what happens when a black hole dies?

The Case of the Missing Black Hole

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You would think that objects weighing billions of times the mass of the sun would be easy to find. Alas, it’s rarely that simple.

Why We Know Nothing about Dark Matter and Dark Energy

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Welcome to the era of precision cosmology…where we’ve managed to very precisely measure everything we don't know about the universe.

An Astrophysicist's Perspective: the World Could Use a Dose of Overview

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Something happens once you see the world from a different perspective. It's called the "Overview Effect". But what does that mean?

Like Stars? How About 6 in the Same Solar System?

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Meet TYC 7037-89-1, a six-star solar system. Astrophysicist Paul M. Sutter explains this stellar surprise discovery.

Say Hello to a Planet So Hot that the Oceans are Lava and it Rains Rocks

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Exoplanets are planets orbiting stars outside the solar system, and every month seems to bring in a new batch of weird, wild, and wonderful worlds.

Asteroid Ryugu Has Dust Grains Older Than the Sun. How?

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In 2018 the Japanese space agency sent the Hayabusa2 mission to the asteroid Ryugu, As a part of that mission, the spacecraft blasted material off the surface of the asteroid, put it in a bottle, and sent it back to Earth. Two years later that sample landed in the western deserts of Australia.

How Stars Die: The Big Ones

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Sometimes when you want to go out, you want to go out with a bang.

Blue Origin is Headed to Space with a Lucky +1

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On behalf of Blue Origin, the opportunity of a lifetime is currently being auctioned off: the last seat on New Shepard, heading to space.

Too Big to be a Neutron Star, Too Small to be a Black Hole. What Am I?

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Okay, stars die in all sorts of interesting and cosmically expressive ways (except the red dwarf stars, who just sort of…stop).

Why Aren't There Stars in the Moon Landing Photos?

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A vocal minority believes that the moon landing was all an elaborate hoax filmed on a sound stage in Hollywood, but it's no hoax. Here's why...

The End of the Universe: The Fall of Light

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There was a time, a time long, long ago, before the first stars appeared. The universe was young then and less than a billion years old. But will the fall of light be the end of the universe?

The 2020 Planetary Primaries

Video | 04:13

What is your favorite planet? Astrophysicist Paul M. Sutter discusses each planet in our solar system in great detail so you can make an informed decision.

Space Launch LIVE: Crew Dragon Splashdown!

Video | 00:46

The SpaceX Crew Dragon spacecraft successfully splashed down into the Gulf of Mexico, near Pensacola, FL, marking the first crew recovery at sea for NASA Astronauts since the year of the final Apollo spacecraft mission in 1975.

Have Aliens Ever Visited Earth

Video | 02:55

Does extraterrestrial life exist out in the universe? Have aliens visited us? Astrophysicist Paul M. Sutter discusses how he does believe there's intelligent life out in the universe but doesn't think they have visited us on Earth.

Future of Space Exploration

Video | 01:53

In the perennial Moon vs. Mars debate, why don't we stop to consider a third candidate: an asteroid?