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NGC 7023, Ghost Nebula

Comets may hold the secret to the origin of life on Earth

We’ve studied life on Earth extensively, but we still have no idea where it came from. Some scientists think it may have spontaneously arisen on Earth by some unknown process. Others think the ingredients for life were delivered here by comets crashing into Earth in the early days of the solar system. The latter theory just got a huge boost.

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Comet 67P/C-G is framed by one of Rosetta’s solar wings, which is 46 feet long. A stream of gas and dust extends from an active area of the comet’s neck, about 10 miles away. (via NY Times)

Aerospace Engineering Magazine  April 1962

Liquid oxygen tank confidence weld complete on VAC

A liquid oxygen tank confidence article for NASA’s new rocket, the Space Launch System, completes final welding on the Vertical Assembly Center at Michoud Assembly Facility in New Orleans.

A liquid oxygen tank confidence article for NASA’s new rocket, the Space Launch System, completes final welding on the Vertical Assembly Center at Michoud Assembly Facility in New Orleans.

November 3 1957, The Soviet Union launches the first animal into space—a dog name Laika—aboard the Sputnik 2 spacecraft. Laika, lived as a stray on the Moscow streets before being enlisted into the Soviet space program. Laika survived for several days as a passenger in the USSR’s second artificial Earth satellite, kept alive by a sophisticated life-support system. Electrodes attached to her body provided scientists on the ground with important information about the biological effects of space travel. She died after the batteries of her life-support system ran down.

Video: Camera inside a ball of water, in space!

During Expedition 40 in the summer of 2014, NASA astronauts Steve Swanson and Reid Wiseman — along with European Space Agency astronaut Alexander Gerst — explored the phenomenon of water surface tension in microgravity on the International Space Station. The crew “submerged” a sealed GoPro camera into a floating ball of water the size of a softball and recorded the activity with a 3-D camera. (Video: NASA)

New day, new series of photos. I’m going to try to blog about the planets of the Solar System; First up is Mercury, which is the smallest and innermost planet. With a diameter ~4878km, it is smaller than some of the moons in the Solar System. The small planet in a 3:2 resonance with the sun, giving it a unique position where a single day takes 2 Mercurian years. It has the smallest tilt of any planet in the Solar System at just 1/30 of a degree.

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