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Tomorrow, is Fischer’s first-ever spacewalk and the 200th on the International Space Station. He’ll be joined in the vacuum of space by fellow astronaut Peggy Whitson. For her, this is spacewalk number nine. Once both astronauts venture outside, their tasks will focus on replacing a large avionic box that supplies electricity and data connections to the science experiments and rigging a new high-definition camera to the outside of station. Watch live coverage of tomorrow’s spacewalk on our website or the International Space Station Facebook page! Credits: ESA/NASA
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Astronomers took this image as they were observing an extraordinary exploding star – a supernova – near the galaxy’s central yellow core! The star rapidly evolved from a supernova containing very little hydrogen to one that is hydrogen-rich — in just one year. This rarely observed metamorphosis was luminous at high energies and provides unique insight into the poorly understood final phases of massive stars. By studying similar galaxies we hold a scientific mirror up to our own, allowing us to build a better understanding of our galactic environment, which we cannot always observe, and of galactic behavior and evolution as a whole. Credit: ESA/Hubble & NASA/D. Milisavljevic (Perdue University)