Chris Impey

While space is often referred to as a vacuum, it isn't completely empty.

Despite being just outside Tucson, Arizona, Biosphere 2 looks almost like a colony on another planet.

We have only one example of biology forming in the universe – life on Earth. But what if life can form in other ways?

The universe is being revealed in exquisite detail with the current generation of large optical telescopes.

I’m an astronomer who studies and writes about cosmology. Researchers have discovered over 5,600 exoplanets in the past 30 years, and their extraordinary diversity continues to surprise astronomers.

I use moon and Mars rocks in my teaching and have a modest collection of meteorites. I marvel at the fact that I can hold in my hand something that is billions of years old from billions of miles away.

There's a lot of trash on the moon right now – including nearly 100 bags of human waste. But whose responsibility is it to clean it up?

AI has now spread into every field of astronomy and is helping astronomers learn more about the universe at an astonishing rate.

Astronomers now routinely discover planets orbiting stars outside of the solar system — they're called exoplanets.

Scientists who study exoplanets explain how the James Webb Space Telescope will study exoplanet atmospheres.

Here's everything you need to know about our local supermassive black hole.

For over 70 years, astronomers have been scanning for radio or optical signals from other civilizations in the search for extraterrestrial intelligence, called SETI.

Every 10 years, astronomers and astrophysicists outline priorities for the hardware they need in the decadal survey on astronomy and astrophysics.

Some have called NASA’s James Webb Space Telescope the "telescope that ate astronomy."

On June 25, 2021, the Office of the Director of National Intelligence released a much-anticipated report on UFOs to Congress.