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 several flyby maneuvers beforehand with planets and asteroids on its way out to meet a comet. And now, ESA has shared many of the images acquired during those close passes during its cruise phase in a series of online albums for the public to easily access.
The image above shows the Moon beyond the hazy line of Earth’s atmosphere, acquired on March 4, 2005 during Rosetta’s first gravity-assist flyby of Earth just over a year after its launch. (Rosetta made three such passes by our planet before gathering enough velocity to make it out to 67P!)
See a list of Rosetta’s flybys below and find out how to access the albums.
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 a very early attempt; we will repeat this process until we receive a response from Philae,” said DLR (Germany’s Aerospace agency) Project Manager Stephan Ulamec. “We have to be patient.”
After landing in an as yet unconfirmed location on comet 67P on November 12, 2014, Philae performed all of its primary science tasks before running out of battery power and entering a hibernation “safe” mode. Its reawakening is anticipated by mission engineers as the comet gets closer to the Sun over the next several months.
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 historic touchdown(s) on comet 67P/C-G.
Currently the exact location of Philae is still unknown, but mission scientists are working on finding out where it is and have hopes of hearing from the lander again as it warms up in coming months.
Watch the previous episode of “Landing on a Comet” here, and see the video above in other languages on ESA’s YouTube page here.
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.
These days the world is looking in awe at the incredible images of comet 67P/Churyumov-Gerasimenko from ESA’s Rosetta spacecraft. But it took Rosetta over ten years to arrive at the comet, during which time it got some great views of other worlds in our Solar System as well: Earth (a couple of times), the asteroids Lutetia and 2867 Steins, and, on this day in 2007, Mars!
The image above was captured by the Philae lander riding aboard Rosetta as the two spacecraft passed just 1,000 km (621 miles) over Mars on Feb. 24-25, 2007. The image shows one of Rosetta’s 14-meter (50-foot) -long solar panels with the surface of Mars below, showing the Mawrth Vallis region in the planet’s northern lowlands.
On Saturday, Feb. 14, 2015, the Rosetta spacecraft performed a bit of a barnstorming act, swooping low over the surface of comet 67P/C-G in the first dedicated close pass of its mission. It came within a scant 6 km (3.7 miles) of the comet’s surface at 12:41 GMT. The image above is a mosaic of four individual NavCam images acquired just shortly afterwards, when Rosetta was about 8.9 km from the comet.
Higher-resolution OSIRIS images should be downlinked from the spacecraft within the next few days.
The view above looks across much of the Imhotep region along the flat bottom of comet 67P’s larger lobe. (See a map of 67P’s named regions here.) At the top is the flat “plain” where the Cheops boulder cluster can be seen – the largest of which, Cheops itself, is 45 meters (148 feet) across.
After the close pass Rosetta headed out to a distance of about 253 km (157 miles) before beginning preparations to approach closer again. Over the course of Rosetta’s mission this year flybys will be the “new normal,” but none will be as close as the Feb. 14 pass.
Watch a video from ESA about the close pass below, and find more images from the flyby in my article on Universe Today here.