A new study of the atmospheres of known giant exoplanets suggests that water - an essential ingredient for life - may be common on other worlds in our Milky Way galaxy. At the same, there may be less of it than astronomers once expected.

The 1st interstellar object - 1I/'Oumuamua - had already passed closest to our sun when astronomers first spotted it. So catching this 2nd one - 2I/Borisov - prior to perihelion was a big plus for astronomers! Before and after images here.

There's a supermassive black hole - 4 million times our sun's mass - in the center of our Milky Way galaxy. Astronomers who've measured star movements near this central black hole are now saying there might be a 2nd companion black hole near it.

How did the so-called tiger stripes - huge parallel cracks - form in the icy surface of Saturn's moon Enceladus? A new study from the Carnegie Institution for Science provides some answers.

At least one type of microbe on Earth not only likes to eat meteorites but actually prefers them as a food source, according to a new international scientific study.

Astronomers have discovered a black hole with 40 billion solar masses in the heart of the Abell 85 cluster of galaxies.

The fascinating object 2I/Borisov has been steadily brightening as it nears its encounter with our sun. It'll pass closest to the sun on December 8, 2019, then flee again toward interstellar space.

Remember comet 46P/Wirtanen? It was a bright comet about this time last year. Around the time it swept near the Earth and sun, the comet entered the field of view NASA’s TESS planet-hunter. And boom! It underwent an outburst, caught by TESS.

White dwarf stars are typically more or less Earth-sized. The planet orbiting white dwarf WDJ0914+1914 appears to be at least twice as big as its star! High intensity radiation from its star is causing this planet to evaporate. Will the same thing happen in our solar system someday?

Parker Solar Probe - now in its 4th orbit around the sun - can endure heat and radiation like no previous mission. This week, 4 new studies in Nature reveal new insights about the sun's mysterious corona and solar wind.