Saltitou durante 3h ? Se o cometa está em movimento como é que a sonda o acompanhou enquanto não aterrava a segunda vez ? Para saltitar 1 km de altura é porque vinha em excesso de velocidade, não ?
With its batteries running low and not enough sunlight to recharge them, ESA's Philae lander has gone into 'idle mode.' In this mode, all instruments and most systems on board are shut down. "Prior to falling silent, the lander was able to transmit all science data gathered during the First Science Sequence," says DLR's Stephan Ulamec, Lander Manager, who was in the Main Control Room when the data came in. The reason for this development is that Philae landed on Comet 67P in an unexpected place: the shadow of a tall cliff. From now on, no contact will be possible unless sufficient sunlight falls on the lander's solar panels, generating enough power to wake it up.
Another of Philae's last actions on Friday was to rotate the lander's main body, to which the solar panels are fixed. As a result, the Rosetta mission said this boosted the chance of Philae coming back online, as it "may have exposed more panel area to sunlight." The public voice of the probe on Twitter also alluded to this possible reawakening, with the first possible window due later on November 15.
Anticipating a possible loss of battery power, ESA scientists activated a drill during their last contact with the lander. The machine is designed to dig up the comet’s subsurface material and rotate it through an onboard oven to investigate its components.
It isn’t yet clear whether the drill has penetrated the comet’s surface or how far down. Scientists are also unsure whether Philae has sufficient power to complete the drilling work and transmit the data.
The comet probe Philae appears to have reached the end of its historic mission after its batteries ran out of power, but only after it managed to transmit a treasure-trove of scientific data back to Earth.
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There is still a chance that the probe could be reawakened in the coming weeks or months as comet 67P/Churyumov-Gerasimenko flies closer to the Sun, allowing more energy to flow from the probe’s solar panels.
A successful attempt to lift and rotate the lander was made on Friday night, but it is not clear what difference this has made to the amount of sunlight falling on its solar cells.
NASA's live stream will include a sky view from a telescope at Marshall Space Flight Center in Alabama. That stream will begin on Monday, Nov. 17 at 7:30 p.m. EST (0030 GMT Tuesday) and will continue until sunrise on Tuesday Nov. 18.
The Slooh live stream will begin on Monday, Nov. 17 at 8:00 p.m. EST (0100 GMT Tuesday) and will include more than just shots of the sky: Slooh will also broadcast audio of the "ionization sounds" created by the meteors.