Rolling Boulders on a Comet

See that big rock there? (It’s easy because there’s a big yellow arrow pointing to it.) That’s a 100-foot/30-meter wide boulder that was imaged sitting on the surface of Comet 67P/Churyumov-Gerasimenko by ESA’s Rosetta on May 2, 2015. Nine months later Rosetta captured another image of the same area in which that huge stone had…

With One More Comet Landing Rosetta’s “Rock and Roll” Mission is Ended

Rosetta is down. I repeat: Rosetta is down. This morning, Sept. 30, 2016, just after 10:39 UTC (6:39 a.m. EDT) ESA’s Rosetta spacecraft ended its mission with an impact onto the surface of the comet 67P/Churyumov-Gerasimenko. The descent, begun with a final burn of its thrusters about 14 hours earlier, was slow, stately, and deliberate, but even…

Rosetta Finally Found Its Lost Philae Lander

Nearly two years after its historic landing on comet 67P/Churyumov-Gerasimenko, ESA’s lander has finally been spotted in an image from the orbiting Rosetta spacecraft—PHILAE HAS BEEN FOUND!

Comet 67P Confirmed To Be a Contact Binary

Ever since we got our first good look at Comet 67P/Churyumov-Gerasimenko from the approaching Rosetta spacecraft in 2014 it has been considered to be a textbook example of a contact binary, with its “rubber duckie” double-lobed shape consisting of an oval “head” and flat-bottomed “body” joined by a “neck.’ Now, using data gathered by Rosetta’s…

Rosetta’s Perihelion-Bound Comet Fires a Fountain Into Space

On July 29, with ESA’s Rosetta spacecraft in orbital tow, the 2.5-mile (4-kilometer) -long Comet 67P/Churyumov-Gerasimenko fired its brightest jet yet since Rosetta’s arrival just over a full year ago, on Aug. 6, 2014. Most of the images of 67P showing jets and outgassing activity released over the past few months have been edited to…

This Was Rosetta’s View of Earth and the Moon in March 2005

ESA’s comet-chasing Rosetta mission is best known today for its two historic firsts of entering orbit around a comet and sending a lander onto the surface of said comet, in May and November of 2014 respectively. But Rosetta didn’t just go directly from its March 2, 2004 launch to comet 67P; it had to perform…

No Signal Yet From Philae (But ESA Isn’t Giving Up)

The first attempt by ESA and Rosetta to hear back from Philae has turned up only radio silence – but that doesn’t necessarily mean the lander is on permanent shutdown. It may just be that it’s still too cold and dark where Philae is to have sufficiently warmed up its components for reactivation. “It was…

The Next Chapter of Philae’s Big Adventure is Here!

If you’ve been following the animated adventures of Rosetta and Philae from the European Space Agency you may have been wondering when the next episode of Philae’s big adventure would be coming. Well it’s here, and you can find out (again) what happened to the little lander on November 12, 2014 when it made its…

Rosetta Shadows Its Comet… Yes, Literally

See the image above? It’s the surface of a comet. Pretty cool. See the dark spot along the bottom? It’s the shadow of the spacecraft that took the image of the comet. WAY cool!