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Awesome week for auroras
Bright auroras reported at high latitudes over both the northern and southern ends of Earth this week.
September 13, 2015
Earth has 3 trillion trees, says study
That's more than previous estimates. But the number of trees has dropped by 46% since the start of human civilization, says the study.
September 12, 2015
ISS transits sun
Composite made from five frames shows the International Space Station (ISS) in silhouette as it transits the sun on September 6, 2015
September 12, 2015
New species of human found
Scientists say they have found a total of 1,550 bones representing 15 individuals. They say it's the largest fossil hominin find on the African continent.
September 11, 2015
What is dark energy?
We need dark energy to explain why gravity seems to be driving galaxies in our universe apart instead of pulling them together.
September 11, 2015
Higher learning
School started this week for many. Here's a photo to celebrate the start of a new school year.
September 11, 2015
Newest Pluto images from New Horizons
New Horizons - which swept near Pluto in July - took a break from sending back images like this. Then this week, NASA released a new batch, and they are amazing!
September 10, 2015
See it! Moon and Venus before dawn
Beautiful meeting of the moon and Venus before dawn today! See it here, in photos from the EarthSky community.
September 10, 2015
Watch ISS crew’s return to Earth on Friday
Three International Space Station crew members will leave the spacecraft and return to Earth on Friday, September 11. Watch their departure and landing.
September 9, 2015
Best look yet at Ceres bright spots
No confirmation yet on what the spots might be, but they’re looking more natural as the Dawn spacecraft orbits closer.
September 9, 2015
