nasa

Via: io9
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Above we have Neil deGrasse Tyson's address at the 28th National Space Symposium. If you have a free hour in your day I highly recommend watching the whole thing, as deGrasse Tyson addresses everything from Newt Gingrich's proposed moon base to the way space travel is a pervasive force in our everyday culture.

ISS,science,nasa,2024
By Unknown
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NASA and White House officials are announcing plans today (Jan. 8) to keep the International Space Station running through at least 2024 — a four-year life extension for the largest spacecraft ever built.

The NASA decision will allow scientists to use the International Space Station for at least the next 10 years, maximizing the science return on the $100 billion orbiting laboratory, Bill Gerstenmaier, NASA's chief of exploration and human spaceflight operations, said in a teleconference. Previous lifetime projections for the space station called for it be shut down in 2020.
comet lovejoy has a complex tail
Via: NASA
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Via NASA:

What causes the structure in Comet Lovejoy's tail? Comet C/2014 Q2 (Lovejoy), which is currently at naked-eye brightness and near its brightest, has been showing an exquisitely detailed ion tail. As the name implies, the ion tail is made of ionized gas -- gas energized by ultraviolet light from the Sun and pushed outward by the solar wind. The solar wind is quite structured and sculpted by the Sun's complex and ever changing magnetic field. The effect of the variable solar wind combined with different gas jets venting from the comet's nucleus accounts for the tail's complex structure. Following the wind, structure in Comet Lovejoy's tail can be seen to move outward from the Sun even alter its wavy appearance over time. The blue color of the ion tail is dominated by recombining carbon monoxide molecules, while the green color of the coma surrounding the head of the comet is created mostly by a slight amount of recombiningdiatomic carbon molecules.
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