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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
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
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
Giant stars’ birth makes cosmic hourglass
The birth throes of high-mass stars have been shrouded in mystery. While penetrating the mystery, astronomers working in Chile discovered a vast cosmic hourglass.
September 9, 2015
One of Saturn’s rings is different
A study suggests particles in a section of Saturn's rings are denser than elsewhere, which could mean that ring is much younger than the rest.
September 9, 2015
Send your name to Mars: Deadline Tuesday
Your name can ride along on a mission to Mars. It's easy, quick and free to make that happen. Details here.
September 7, 2015
Andromeda galaxy yields star birth secrets
Are the same percentages of stars with gargantuan mass, low mass and intermediate mass born everywhere throughout space?
September 7, 2015
New Hubble image: Spiral galaxy M96
In this image, the galaxy resembles a whirlpool of glowing gas, rippled with dark dust that swirls inwards towards the galactic nucleus or core.
September 5, 2015
Aryan Mishra invites teens to astronomy
Asteroid discoverer Aryan Mishra wants to open teens' eyes to the beautiful and amazing possibilities that cosmos has in store.
September 3, 2015
