Wonderful evening sky! Best moon and Venus photos

Showing once again that we all live under one sky ... the moon and Venus on December 22, 2014.

Comet Finlay is in outburst!

With a small 'scope or large binoculars, you can catch Comet Finlay. It'll be near Mars on December 23 and 24. Cool photo opportunity for those equipped to catch it!

Voyager spacecraft rides tsunami wave in interstellar space

Listen to how these waves cause surrounding ionized matter to ring like a bell. You’ve never heard anything from farther away ...

Questions of life on Mars revive with methane spike

Curiosity rover has now measured a dramatic spike in methane, an organic chemical, in the Martian air, plus other organic molecules in a Martian rock.

Rosetta’s comet fuels debate on origin of Earth’s oceans

There's three times the concentration of deuterium-enriched water (heavy water) in the vapor from Rosetta's comet as in the water on Earth.

Buckyballs in space born in molecular striptease?

Oo la la! Big organic compounds called PAHs may "strip" to create buckyballs in space.

Mars’ Mount Sharp built of lake sediments?

The Curiosity rover on Mars is exploring the base of Mount Sharp, within the Gale Crater. Did the crater hold a series of lakes? Did lake sediments create the mountain?

Asteroid 2014 UR116 is no threat to Earth

Calculations by NASA and Harvard say the closest the asteroid will get to Earth is about 2.7 million miles - over 10 times the moon's distance - in April 2047.

Video: Chasing Starlight

Beautiful new time-lapse video from Jack Fusco, under Canada's dark skies.

New Horizon spacecraft wakes up for encounter with Pluto system

It's awake! On Saturday, the New Horizons spacecraft came out of hibernation, at the doorstep of Pluto.

2026 Donation Campaign

If EarthSky has ever helped you discover something new, prepare for an eclipse, spot a planet, or simply inspired a moment of wonder, today is the perfect day to give back. Your donation helps keep trusted science news, expert night sky guides, and independent science journalism free for everyone.

Please help keep EarthSky going by donating today!

Please help keep

EarthSky going!

If you've already donated, we apologize for the popup and greatly appreciate your support.