Space & Astrophysics

Try this: It’s about 10 times the number of cups of water in all the oceans of Earth.

The past ~4 billion years have been an incredibly successful, unbroken run for life on Earth. The future won’t be nearly so bright.

If we were born trillions of years in the future, could we even figure out our cosmic history?

The unconventional method could help astronomers better track meteorites that fall during the daytime.

If there really is another version of you out there in a parallel universe, what can that teach us about reality?

The universe is only 13.8 billion years old, but we can see back 46.1 billion light-years. Here’s how the expanding universe does it.

Gravitation, all on its own, can reveal what’s present in the cosmos like nothing else.

With the huge growth in satellites, fears of a crowded sky are coming true.

Are the stellar remnants in our cosmic backyard actually our parents and grandparents?

The most massive galaxies lost their star-forming material very early on and never got it back.

The Copernican principle states that Earth is an ordinary planet, but that does not mean that life is ordinary in the universe.

Everything else in the universe is either a particle or field. Dark energy behaves as neither, and it may be a property inherent to space itself.

Phobos and Deimos only have two explanations, and neither one adds up.

Research from NASA reveals Mars’ spectacular volcanic past.

The atmosphere’s habitable zone is so small, several mountain ranges extend beyond it.

Even with all the recent impacts we’ve seen, it might be more “foe” than “friend” to us.

Asteroid Bennu is still far more likely to fly right by us than to make impact.

It does not matter if intelligent life exists elsewhere. We will never find each other.

NASA will use energy from Earth’s gravity to launch the Lucy spacecraft in October of this year.

Betelgeuse, the tenth brightest star in the night sky, mysteriously dimmed last year. Now researchers know why.

Jupiter’s atmosphere is hotter than it should be, and now we know why.

For the first time, light that comes from behind a black hole has been spotted.

While we can see many solar storms coming, some are “stealthy.” A new study shows how to detect them.

We are likely to see the first humans walk on Mars this decade.

Scientists do not know what is causing the overabundance of the gas.

A new government report describes 144 sightings of unidentified aerial phenomena.

Using image analysis tools developed for astronomy, researchers are predicting cancer therapy responses.

Jupiter’s mysterious auroral events are caused by vibrating waves of plasma.

A new artificial intelligence method removes the effect of gravity on cosmic images, showing the real shapes of distant galaxies.

Tiny fluctuations in old Kepler data reveals four runaway planets that are reminiscent of Earth.