More life keys in Titan’s atmosphere

Scientists expand their knowledge of the stew of ingredients in the atmosphere of Saturn's large moon Titan, and contemplate whether Titan has cooked up life.

We are galaxy stuff

A new study - based on supercomputer simulations - reveals that each one of us may be made in part from matter that passes from one galaxy to another.

Watch launch of new ISS crew July 28

Live launch coverage from Kazakhstan begins at 10:45 a.m. EDT (14:45 UTC). You can also watch the spacecraft dock with the ISS, starting at 5:15 p.m. EDT (21:15 UTC).

Close shave from an undetected asteroid

Whoosh! Astronomers discovered a small asteroid - now designated as asteroid 2017 OO1 - on July 23. That was 3 days after it passed 1/3 the moon's distance from Earth.

How many distant comets?

Mysterious long-period comets might be more common - and bigger - than astronomers thought. Studies like this one will help reveal what kind of hazard they might pose.

Haze on Saturn’s horizon

Spectacular recent image from the Cassini spacecraft, now in its Grand Finale year around Saturn, taken from just above Saturn's cloudtops, showing haze on the planet's horizon.

Hubble sees Phobos orbiting Mars

This image and video aren't artists' illustrations. They're from a real time-lapse sequence of images - acquired by the Hubble Space Telescope - of the tiny moon Phobos orbiting Mars. Cool!

Have you seen the Mayak satellite?

On July 14, an amateur group in Russia launched a small satellite called Mayak. They said it would become the "brightest shooting star" in the sky. Why'd they do it? Here's how to look for it.

Soar over Pluto and Charon

To celebrate the 2-year anniversary of New Horizon's flyover of the Pluto system, NASA released these 2 cool videos. Sail over the surface of Pluto and its large moon Charon.

Peering toward the Cosmic Dark Ages

During the Cosmic Dark Ages, our universe matured from a primordial soup of neutral gas to the star-filled cosmos we see today. A new study probes this mysterious time.

Matching Donation Campaign

Exciting news! EarthSky received a $50,000 gift, with a request that it be used to collect matching funds. Please help us meet this match by donating to EarthSky today!

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