Not long ago, we couldn’t see planets orbiting distant stars at all. Now astronomers have captured the passage of exoplanet Beta Pictoris b into the glare of its star … then its re-emergence 2 years later.
For decades, scientists have said that at least some of Earth’s water came from comets and asteroids. New research suggests an even more primordial source, the vast cloud in space from which our world formed.
This new Juno spacecraft image shows magnificent swirling clouds in Jupiter’s dynamic atmosphere. The craft was about 4,400 miles (7,000 km) from the planet’s cloud tops on October 29, over about 40 degrees north.
Earlier in 2018, the Curiosity rover found evidence for abundant organic compounds – those containing carbon – on Mars. Does this mean Mars once had life? Or can some other process can explain it? Here’s one idea.
“If you were a Martian coming to explore Earth’s interior, it wouldn’t matter if you put down in the middle of Kansas or the beaches of Oahu … The beauty of this mission is happening below the surface.”
NASA’s Mars Curiosity rover drove about 197 feet (60 meters) over this past weekend to a site called Lake Orcadie. This was Curiosity’s longest drive since experiencing a memory anomaly on September 15.
The star could be only a single generation removed from the Big Bang. It’s the new recorder-holder for having the fewest “metals,” that is, the fewest of the heavier elements made inside stars and released to space via supernovae.
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.
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.
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.