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Where are Ceres’ large craters?

There’s a curious lack of big craters on the dwarf planet Ceres, largest body in the asteroid belt between Mars and Jupiter. Why?

New China telescope to search for aliens

A 1,600-foot (500-meter) dish called FAST – in southwest China – is now the world’s largest radio telescope. It’s expected to be fully operational in September.

If it’s not a UFO, what is it?

Most Unidentified Flying Objects aren’t unidentified at all. Here’s a list of natural and human-made objects in the sky that people frequently mistake for UFOs.

Sky and Earth time-lapse, New Zealand

A new time-lapse video from New Zealand, showing both its dramatic landscape and the sky above. It’s called “The Edge of Perception.”

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Perseid outburst expected in 2016

Outburst – perhaps 200 meteors an hour – predicted for 2016 Perseid meteor shower. Peak night August 11-12, but watch on the nights leading up to the peak, too.

Watch for Delta Aquarid meteors

Delta Aquarid shower officially began mid-July. Nominal peak July 28 or 29. The shower is long and rambling. If you watch the Perseids in August, you’ll see Delta Aquarids then, too.

Cloud study reveals Venus’ surface

Scientists had suspected that mountains on Venus affected weather patterns seen rippling across Venus’ cloudtops. A new study provides evidence of this connection.

A year of Earth from a million miles

Watch a full year of Earth’s sunlit side, seen from a million miles away by the DSCOVR spacecraft.

Where’s the moon? Waning gibbous

Look for the waning gibbous moon late at night. It might look strangely oblong. Or look for it in the west in early morning, floating against the pale blue sky.

Total eclipse of sun: August 21, 2017

First total solar eclipse visible from the U.S. since 1991 (seen only from part of Hawaii), and first visible from contiguous U.S. since 1979. Start planning now!

Moon shadow in 2017 eclipse

Fly along with Earth’s shadow in a video depicting the path of the August 21, 2017 total eclipse of the sun, first eclipse over the continental U.S. since 1979.

Healthy forests need birds and bees

A new study shows that we humans can help maintain healthy forests by focusing conservation efforts on the protection of animal pollinators and seed dispersers.

The X at the center of the Milky Way

Computer models, and observations of our galaxy and others, suggested a Milky Way X, made of stars. An analysis of data from the WISE space telescope reveals it.