Tag: Comets

The Lander That Could.

“‘Prior to falling silent, the lander was able to transmit all science data gathered during the First Science Sequence,’ lander manager Stephan Ulamec said in a statement. ‘This machine performed magnificently under tough conditions, and we can be fully proud of the incredible scientific success Philae has delivered’…’The data collected by Philae and Rosetta is set to make this mission a game-changer in cometary science,’ said Matt Taylor, ESA’s Rosetta project scientist.”

After traveling 4 billion miles, accomplishing an exhilarating landing on a 84,000-mph moving target, and, after 57 hours of work in an unfortunately dark location, successfully sending a valedictory round of data, the ESA’s history-making Philae probe falls into slumber. “We still hope that at a later stage of the mission, perhaps when we are nearer to the Sun, we might have enough solar illumination to wake up the lander and re-establish communication.” Rest well, little lander — ya did good.

The Fault in Our Stars.

“As the Sun follows the swirling motion of the Galaxy’s arms, circling around the galactic center, it also moves up and down, periodically crossing the plane that cuts the Galaxy into a top and a bottom half like the two bread slices in a sandwich. The authors suggest that as the Sun oscillates up and down, it crosses a denser layer of dark matter — like the ham in the middle — causing a gravitational push and pull that disturbs comets in the Oort cloud.”

By way of Dangerous Meta, did Dark Matter kill the dinosaurs? Extremely speculative here, but food for thought. “The European Space Agency’s Gaia mission, which launched last year, will map the gravitational field of the Galaxy and could rule out or confirm the presence of this darker disk.”