Webb spies Chariklo ring system with high-precision technique

In 2013, Felipe Braga-Ribas and collaborators, using ground-based telescopes, discovered that Chariklo hosts a system of two thin rings. Such rings had been expected only around large planets such as Jupiter and Neptune.

Shadow hunters capture Didymos asteroid eclipsing stars

After months of effort, astronomers have succeeded in capturing the momentary shadow cast by the Didymos asteroid, from tens of million kilometers away as it passed in front of far-distant stars—a feat of observation only ...

NASA's Lucy team discovers moon around asteroid Polymele

Even before its launch, NASA's Lucy mission was already on track to break records by visiting more asteroids than any previous mission. Now, after a surprise result from a long-running observation campaign, the mission can ...

After 14 years, first COSMIC satellite mission comes to an end

The last of six tiny satellites that were rocketed into space 14 years ago—and then went on to prove that the wealth of accurate atmospheric data that can be gleaned from existing GPS signals can improve operational weather ...

Thanks, Gaia: Astronomers spy Europa blocking distant star

On 31 March 2017, Jupiter's moon Europa passed in front of a background star—a rare event that was captured for the first time by ground-based telescopes thanks to data provided by ESA's Gaia spacecraft.

Spring on Pluto: An analysis over 30 years

Whenever it passes in front of a star, Pluto provides precious information about its atmosphere, precious because occultations by Pluto are rare. The survey achieved by researchers from Paris Observatory over several decades ...

Asteroids help scientists measure distant stars

Look up at the sky on a clear night, and you'll see lots of stars. Sometimes they seem almost within reach or at least a short rocket ride. But the closest star to Earth—not counting our sun—is more than four light years ...

See the moon photobomb saturn in an amazing capture

Welcome to Saturn as you've probably never seen it. It's always awe-inspiring to see the clockwork motion of the heavens transpire in real time. In a slow motion universe, occultations give us the chance to see the cosmos ...

page 1 from 3