Moon in front of Earth

It's the fully illuminated far side of the moon - the side not visible from Earth - set against the fully illuminated (dayside) of the Earth.

Supernovae showered Earth with radioactive debris

The supernovae may have been less than 300 light-years away. The evidence comes from radioactive iron-60, found in ocean sediments and crust.

California drought now the norm?

California drought patterns have occurred much more frequently in recent decades, says a new study.

SETI turns focus to 20,000 red dwarf stars

Astronomers with the Search for Extraterrestrial Intelligence had their reasons for ignoring red dwarf stars in the past. But now that thinking has changed.

Snow goose moon

To our knowledge, Snow Goose Moon isn't one of the commonly used moon names. But, at least in some parts of the world, it should be.

Asteroid swept within moon’s distance April 5

Astronomers did know in advance that asteroid 2016 FW13 would pass closely - but safely - on April 5, 2016. Check out a photo from the Virtual Telescope Project.

Astronomers await pings from troubled Hitomi

An unknown disaster seems to have befallen the Japanese satellite that launched in February. Why X-ray astronomers are anxious for good news.

Amazing moons of our solar system

Yes, we're eager to explore the other planets in our solar system. But their moons might be even more interesting ...

Check it out! Full-sphere astrophotos

A new camera records a 360-degree full-sphere panorama with only one single shot. It's bound to set off a small revolution in astrophotography, says Project Nightflight.

How to make a mountain on Mars

They're not mountains in the earthly sense. They're mile-high mounds, which - a new study says - were carved over billions of years by wind and climate.