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Chandra Data Suggests How Giant Black Holes Grow

New data from NASA’s Chandra X-ray Observatory has challenged prevailing ideas about how super massive black holes grow in the centers of galaxies.


Neutrons Escaping To Parallel Universe?

About half a million ultracold neutrons (around 2 miiliKelvin above absolute zero) were let into a container and allowed to bounce around. Isolated neutrons have a half life of 881 seconds. The number going into, and then the number coming out of the container after 300 seconds, were counted. The number coming out depended on the direction of a small magnetic field applied to the container.

The authors had no explanation under conventional physics. Neutron decay should not depend on the direction of a small magnetic field. They raise the theory that some of the neutrons are turning into “mirror neutrons” that exist in a mirror universe parallel to ours. This needs much more testing, especially to find if some other factor in the experiment is causing the measurement change (see: faster than light neutrinos). If all other possibilities are eliminated, then new physics like mirror universes might be accepted as an explanation.”

NASA astronaut Tracy Caldwell Dyson, Expedition 24 flight engineer, looks through a window in the Cupola of the International Space Station. A blue and white part of Earth and the blackness of space are visible through the windows. The image was a self-portrait using natural light.

NASA astronaut Tracy Caldwell Dyson, Expedition 24 flight engineer, looks through a window in the Cupola of the International Space Station. A blue and white part of Earth and the blackness of space are visible through the windows. The image was a self-portrait using natural light.

the-star-stuff:

Haunting Photos of Saturn Moons Snapped by Cassini Spacecraft

NASA’s workhorse Saturn orbiter Cassini has just beamed back stunning new views of the ringed planet’s dazzling moons, including the probe’s closest-ever pass over the ice geysers of Enceladus.

The new photos reveal the plume of water ice and vapor that springs from the south pole of Enceladus — Saturn’s sixth largest moon — as well as the pockmarked surface of Dione and the tiny oblong shape of Janus.

Cassini made a close flyby of Enceladus on Tuesday (March 27), swooping within about 46 miles (74 kilometers) of the moon’s surface. This moon is one of the few known geologically active places outside Earth in the solar system.

CREDIT: NASA/JPL-Caltech/Space Science Institute

interstellarexperience:

This is Enceladus, the sixth largest moon of Saturn, and one of the most intriguing objects in the solar system. It was first discovered by the great William Herschel in 1789, and first visited by the Voyager probes in 1980, and 1981. This tiny little moon is small enough to fit comfortably within Great Britain, but receives a lot of attention from scientists. Enceladus’s surface is completely covered in a shell of water ice up to 40km thick, but no one knows exactly how thick it is. As Enceladus orbits Saturn, the planets gravity squeezes and deforms the moons core, sort of like kneading a ball of dough, and this produces heat within the moon. It is thought this heat is enough to melt a sub-surface ocean which makes this small moon a candidate to support life. The Cassini spacecraft has made numerous flybys of Enceladus and has discovered huge geysers erupting from it’s south pole. Samples show that these geysers are made of water with a similar salt content to Earth’s oceans. Water must be liquid for a salt content of that magnitude to occur. Organic compounds, the building blocks of life, were also discovered. Scientists consider Enceladus, along with Europa, a moon of Jupiter, to be the most likely places for life to exist outside of Earth. All of the pictures in this photoset were taken by the Cassini spacecraft

preachingtoinfinity:

SN 1572 (Tycho) was a supernova in the constellation Cassiopeia. It has been estimated that the distance to the supernova remnant is between approx. 8,000 and 9,800 light-years. 

preachingtoinfinity:

SN 1572 (Tycho) was a supernova in the constellation Cassiopeia. It has been estimated that the distance to the supernova remnant is between approx. 8,000 and 9,800 light-years.