Juno in safe mode for Jupiter flyby

A sudden safe mode halted planned data collection during the spacecraft's perijove - or closest point to Jupiter - on October 19. Next perijove December 11.

Animation: Schiaparelli’s descent to Mars

Computer-generated animation of the descent of the Schiaparelli lander to the surface of Mars. Real one will happen this Wednesday, October 19.

Is asteroid 2016 HO3 a second moon?

No, it orbits the sun. But its orbit keeps it as a constant companion of Earth, and it'll remain so for centuries to come.

Asgardia, the nation state of space

Russian businessman Igor Ashurbeyli believes that an orbiting space station has the potential to become a sovereign nation in space.

Hubble reveals 10 times more galaxies

The universe suddenly looks a lot more crowded, thanks to a deep-sky census assembled from surveys taken by the Hubble Space Telescope and other observatories.

The Milky Way’s ancient heart

Astronomers found RR Lyrae stars at our Milky Way galaxy's core. They now believe ancient globular star clusters may have merged to form the core of the Milky Way.

The fate of worlds orbiting 2 suns

These Tatooine worlds, as they're called, might be the ultimate survivors, as their 2 stars begin aging in ways that are sometimes threatening or even catastrophic.

Huge gas cloud headed for Milky Way

In about 30 million years, a massive cloud of gas - called Smith's Cloud - will collide with the Milky Way.

Our universe has no direction

The universe isn't spinning or stretched in any particular direction, according to stringent tests from scientists in London.

Giant ‘cannonballs’ shooting from star

The Hubble Space Telescope has detected superhot blobs of gas, each twice as massive as the planet Mars, being ejected near a dying star.

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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