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How many house-sized NEOs?
A new study shows house-sized NEOs - Near-Earth Objects - to be 10 times fewer than studies had indicated. Still, there are some 3.5 million NEOs larger than 10 meters across.
September 5, 2017
Artificial intelligence probes gravity’s lens
Researchers at SLAC and Stanford have been using brain-mimicking neural networks to analyze the spacetime distortions of gravitational lenses. They say their analysis is 10 million times faster than before.
September 5, 2017
A new look at ocean worlds
Here's how the James Webb Space Telescope - successor to Hubble, due to launch in 2018 - will study Jupiter's moon Europa and Saturn's moon Enceladus.
September 4, 2017
Floods: Not just a coastal issue
As Hurricane Harvey shows, flooding can happen wherever large storms stall and dump lots of rain. A new study finds development is increasing in flood zones far from any coast.
August 29, 2017
Space station transits sun during eclipse
There was only one part of Earth where you could catch the International Space Station crossing the sun's face during the August 21 solar eclipse. These guys saw it, and created this video.
August 24, 2017
July 2017 tied with 2016 for hottest July
It was another hot July. Last month was tied with July 2016 as the warmest July in the 137 years of modern record-keeping.
August 23, 2017
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.
August 22, 2017
Eclipse photos from EarthSky friends
We received many more wonderful photos of the August 21 eclipse than for any prior event. We love them all, and wish we could post them all!
August 22, 2017
Largest-ever Gulf of Mexico dead zone
For 32 years, scientists have tracked the oxygen-depleted waters that appear each summer in the Gulf of Mexico. This year's dead zone is the biggest yet.
August 21, 2017
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.
August 21, 2017
