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How ISS astronauts saw the eclipse

The International Space Station passed 3 times on Monday through the moon’s penumbral shadow. Images of the moon’s shadow on Earth, seen from space, acquired by ISS astronauts.

The hunt for asteroids

New short video from NASA about the hunt for potentially hazardous asteroids and comets, and ways to defend Earth against them.

Solar eclipse marked beginning of Iroquois Confederacy

A total solar eclipse of August 22, 1142 may have coincided with the birth of the Iroquois Confederacy, oldest democracy in North America and possibly on Earth.

Cassini prepares for last look at Titan

Even as the long-lived Cassini spacecraft gears up for its last moments at Saturn, it’s preparing for a final long-distance look at Titan, Saturn’s large moon, on September 11.

Studying sun’s atmosphere on eclipse day

Monday’s total solar eclipse will give scientists a rare opportunity to study the lower regions of the sun’s corona. Here’s what NASA scientists will be investigating.

Science balloons soaring on new missions

NASA’s Balloon Program is preparing new missions, including one designed to investigate the birth of our universe.

Cassini’s final 5 starts August 14

Today, as part of its Grand Finale, the Cassini spacecraft begins its final 5 orbits, a set of ultra-close sweeps through Saturn’s upper atmosphere.

Well, hello! 4 Earth-sized planets found at nearest sunlike star

The nearest sunlike star is Tau Ceti, only 12 light-years away. It’s now known to have at least 4 planets orbiting it, with relatively small masses, tantalizingly close to Earth’s mass.

Why no eclipse every full and new moon?

In 2017, there are 12 full moons and 12 new moons, but only 4 eclipses – 2 lunar and 2 solar.

Is 2014 MU69 composed of 2 objects?

The next target for the New Horizons spacecraft – which passed Pluto in 2015 – reveals itself, intriguingly, to be a possible contact binary, that is, 2 objects in 1.

Total eclipse of sun: August 21, 2017

All you need to know about the 1st total solar eclipse visible from the contiguous U.S. since 1979, from eclipse master Fred Espenak.

After 40 years, Voyager still reaching for stars

“Few missions can ever match the achievements of the Voyager spacecraft during their four decades of exploration.”

Sun’s core rotates 4x faster than surface

Eureka! After decades of puzzling about whether the sun’s core spins faster than its surface, astronomers can now measure it.

Lots of water inside the moon?

Researchers have detected widespread water within ancient volcanic deposits on the moon.

No Earth-like atmosphere for Proxima b

It’s the nearest exoplanet and in its star’s habitable zone. But a new study suggests radiation from its star would drain an Earth-like atmosphere 10,000 times faster than on Earth.

EarthSky’s meteor shower guide for 2017

There’s a rumor going around about a spectacular meteor shower on August 12, 2017. True? No. All you need to know about 2017’s Perseid meteor shower – and the year’s other major meteor showers – here.

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.

A test of NASA’s asteroid defense system

Asteroid 2012 TC4 might give Earth a close shave, or pass more distantly, in October, 2017. Scientists are trying to reacquire the asteroid this summer – find it again in space – to determine its precise orbit.

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).