Could ‘Oumuamua be an alien lightsail?

The object we call ‘Oumuamua entered our solar system a year ago and quickly left again. It’s a very puzzling object. Could it be an alien lightsail? A new paper from Harvard discusses that possibility.

Lucy mission to Jupiter’s Trojans gets the nod from NASA

There are perhaps as many Trojan asteroids orbiting 60 degrees ahead of and behind Jupiter as in the asteroid belt between Jupiter and Mars. Now NASA has given a go-ahead for the 1st mission to Jupiter’s Trojans.

The US and Europe take a next step toward the moon

The European Service Module – eventually to be used to power and propel NASA’s Orion spacecraft in the 1st manned moon mission since the 1970s – leaves Europe today and arrives in the U.S. tomorrow.

Timelapse shows 25 years of Supernova 1987A

If you were alive and interested in astronomy then, you’ll remember Supernova 1987A, the 1st supernova visible in Earth’s skies since 1604. The new timelapse shows its aftermath over a 25-year period, 1992 to 2017.

Dusk for Dawn mission to asteroids

NASA’s Dawn spacecraft has gone silent. The mission to explore the 2 largest bodies in the asteroid belt, Vesta and Ceres, is at an end.

Bold new plan announced to explore alien ocean worlds

Earth is not the only ocean world in the solar system. In fact, there are several. A new paper just published in Astrobiology seeks to plan out the best ways to explore these alien oceans.

Scientists now processing images of asteroid Bennu

The OSIRIS-REx spacecraft – launched from Earth in September 2016 – has begun acquiring images of the mission target, primitive asteroid Bennu.

NASA to continue signaling Opportunity rover on Mars

The initial 45-day signaling period to the 14-year-old rover has ended. But NASA said this week it will continue trying to hail Opportunity. The rover has been silent since June, when a Mars dust storm swept over it.

Rare blue asteroid sometimes behaves like a comet

Astronomers caught a glimpse of Phaethon – the bizarre blue asteroid responsible for the Geminid meteor shower – and found it even more enigmatic than they’d thought.

What made these weird straight lines on Dione?

Planetary scientists have discovered some very unusual long straight lines on the surface of Saturn’s moon Dione. What created them?