After the comet lander Philae lost contact with Earth shortly after landing, it was feared that it might be lost forever. But the science team hoped that as comet 67P got closer to the Sun light intensity would increase and Philae would finally receive enough energy to recharge its batteries and say "Hello". And that is what happened. Philae is active again and ready to contribute more information.
The mission started in March 2004 when the Rosetta spacecraft lifted off for a long journey. After a 10 year gravity assisted journey Rosetta reached its ultimate goal and began surveying Comet 67P (Comet Churyumov-Gerasimenko). It sent Philae to the comet's surface successfully. But after a brief celebration, it was discovered that the mechanism designed to grip on to the comet surface malfunctioned. The lander bounced from its initial touchdown and landed in a shaded area. After a short time the batteries, no longer able to recharge, ran out of energy and the spacecraft shut down.
Where do comet tails come from? There are no obvious places on the nuclei of comets from which the jets that create comet tails emanate. Last year, though, ESA's Rosetta spacecraft not only imaged a jet emerging from Comet 67P/Churyumov-Gerasimenko, but flew right through it. Featured is a telling picture showing a bright plume emerging from a small circular dip bounded on one side by a 10-meter high wall. Analyses of Rosetta data shows that the jet was composed of both dust and water-ice. The mundane terrain indicates that something likely happened far under the porous surface to create the plume. This image was taken last July, about two months before Rosetta's mission ended with a controlled impact onto Comet 67P's surface.
KitsuneFox: In the Unites States, the most Easterly point, that is drivable, is the West Quoddy Head Lighthouse in Maine. Technically that is the first place someone could celebrate New Years in the 'states. goo.gl/maps/YtsPgzoNuqrpVjfVA
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KitsuneFox: Happy 'Black Friday'! Dubai Mall is the world's current largest shopping center by total area, boasting an area of over 12,000,000 square feet. goo.gl/maps/oUVzRzr3PUdkYhvX8
Nov 26, 2021 12:14:42 GMT