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The Milky Way’s long-lost sibling
Two billion years ago, the Andromeda galaxy - closest large spiral galaxy to our Milky Way - might have eaten another large galaxy.
July 23, 2018
Wow! New volcano on Jupiter’s moon Io
Io is small, but it's the most volcanically active world in our solar system. It has hundreds of active volcanoes. Now the Juno spacecraft has found one more.
July 23, 2018
Moon between Antares and Saturn
It's getting exciting up there! We're headed for a brightest Mars, and a long lunar eclipse, on July 27. Get in the mood by identifying Saturn and red star Antares near tonight's moon.
July 23, 2018
These spacecraft are studying Mars dust
Raging, planet-wide dust storms - like the one going on now - happen only every 6 to 8 years on Mars. Here's how NASA spacecraft are studying it, plus a cool before-and-after video!
July 22, 2018
Amazing Kilauea volcano imagery you might have missed
For more than 2 months, lava has been pouring from Hawaii’s Kilauea volcano, destroying homes and remaking the land. A compilation of photos and videos, here.
July 22, 2018
Moon north of star Antares on July 22
The name Antares derives from the Ancient Greek and means rival to Ares - that is, rival to Mars. Like Mars, Antares is red in color. Antares is sometimes brighter than Mars, it's no match for Mars now!
July 22, 2018
Dust storm rolls in on Mars
Forecast for Mars: dust! This smaller storm appeared on Mars in April 2018, prior to the planet-wide storm happening now.
July 21, 2018
Apollo and the moon-landing hoax
Why do people persist in denying that human beings landed on the moon?
July 20, 2018
Is the moon toxic to humans?
When the Apollo astronauts returned from the moon, the dust that clung to their spacesuits made their throats sore and their eyes water. Lunar dust is made of sharp, abrasive particles, but how toxic is it for humans?
July 20, 2018
Mars from the International Space Station
Astronaut photo of Mars from the International Space Station (ISS), In this image, Mars has been highlighted and enlarged 20 times.
July 20, 2018
