Rocket | Science
Here, it probably IS rocket science. A place for me to discuss astrophysics and space exploration, although other sorts of science, math, and technology are likely to make appearances.

"Per aspera ad astra"
  • astronomiae
  • altrocketdungeon
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  • women-in-science
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  • spacey-stuff
  • try-and-touch-my-asymptote
rocketman-inc:

Earth from space

rocketman-inc:

Earth from space

laboratoryequipment:

Scientists Can Reset Human Stem CellsScientists have successfully reset human pluripotent stem cells to the earliest developmental state – equivalent to cells found in an embryo before it implants in the womb (seven to nine days old). These pristine stem cells may mark the true starting point for human development but have been impossible to replicate in the lab until now.The discovery, published in Cell, will lead to a better understanding of human development and could in future allow the production of safe and more reproducible starting materials for a wide range of applications including cell therapies.Read more: http://www.laboratoryequipment.com/news/2014/09/scientists-can-reset-human-stem-cells

laboratoryequipment:

Scientists Can Reset Human Stem Cells

Scientists have successfully reset human pluripotent stem cells to the earliest developmental state – equivalent to cells found in an embryo before it implants in the womb (seven to nine days old). These pristine stem cells may mark the true starting point for human development but have been impossible to replicate in the lab until now.

The discovery, published in Cell, will lead to a better understanding of human development and could in future allow the production of safe and more reproducible starting materials for a wide range of applications including cell therapies.

Read more: http://www.laboratoryequipment.com/news/2014/09/scientists-can-reset-human-stem-cells

blondeisawesome:

The Milky Way with a shooting star

blondeisawesome:

The Milky Way with a shooting star

World’s first 3-D printed car being assembled at IMTS

randdmag:

 

During the six-day IMTS
manufacturing technology show in Chicago this week, the “Strati” will be
the first vehicle printed in one piece using direct digital
manufacturing. The process will take more than 44 hours of print time. A
team including Local Motors, Cincinnati Inc. and Oak Ridge National
Laboratory will then rapidly assemble it for a historic first set for
Saturday.

Read More - http://www.rdmag.com/videos/2014/09/world%E2%80%99s-first-3-d-printed-car-being-assembled-imts

allthesmallquarks:

proofmathisbeautiful:

OPTICS
Via: Parachutes and PolicyMic

Excited to learn Optics this semester!

allthesmallquarks:

proofmathisbeautiful:

OPTICS

Via: Parachutes and PolicyMic

Excited to learn Optics this semester!

humanoidhistory:

Jet engine on apron stand, 1966. (NASA/DoD)

humanoidhistory:

Jet engine on apron stand, 1966. (NASA/DoD)

antikythera-astronomy:

The tropics of Mars

antikythera-astronomy:

The tropics of Mars

distant-traveller:

Giant geysers on Jupiter’s icy moon Europa mysteriously disappear



The huge plumes of water vapor erupting from Jupiter’s ice-covered moon Europa seem to have vanished, and scientists aren’t sure why.
In December 2013, researchers using NASA’s Hubble Space Telescope announced that they had spotted evidence of geysers blasting into space from Europa’s south polar region. The discovery sparked a great deal of excitement among space scientists, as it suggested that a robotic flyby probe might be able to sample Europa’s subsurface ocean of liquid water without even touching down.
However, follow-up Hubble observations in January and February of this year showed no signs of the plumes, which were estimated to reach about 125 miles (200 kilometers) into space.
There are several possible explanations, researchers said. For example, Europa’s geysers may be sporadic — more like volcanoes here on Earth than the plumes blasting pretty much constantly from the south pole of Saturn’s icy moon Enceladus, which harbors a subsurface ocean like Europa.
It’s also possible that Europa’s plumes are only visible to Hubble’s instruments at certain times.
"It could be just the way that we use the auroral emissions coming from those plumes at the UV [ultraviolet] wavelengths of light that we use with Hubble," discovery team member Kurt Retherford, of the Southwest Research Institute in San Antonio, told Space.com.
"These things depend on Jupiter’s plasma environment," Retherford added. "Maybe there were just a lot of particles, atoms, getting excited by electrons and ions in Europa’s atmosphere, more so than at other times, and [they] just lit up the plumes more than they usually do."
Further, the plumes may sometimes simply be too small to see, Retherford said. (Enceladus’ geysers have been observed relatively close-up by NASA’s Saturn-orbiting Cassini spacecraft, but scientists are relying on the Earth-orbiting Hubble to study the features on Europa.)
Another possibility is that the geysers don’t exist, that the detection by Hubble, which was based primarily on observations the telescope made in December 2012, was an artifact or misinterpretation of some sort. But Retherford stressed that this is unlikely.
"The best explanation still is plumes for that dataset, no doubt about it," he said.
Retherford and his colleagues are going to look for the plumes again soon. They’ll train Hubble on Europa from November through April, in a more comprehensive attempt to confirm the existence of the water-vapor geysers and to characterize their behavior.
"The question is the variability aspect of the plumes. Why do we see them in some observation sets and not others?" Retherford said.
Learning more about the plumes is a key priority for astrobiologists and for NASA, which is eyeing a mission to Europa in the mid-2020s. The leading candidate for that mission at the moment is probably a probe called the Europa Clipper, which would make multiple flybys of the icy satellite.
"This is the kind of thing that could have a profound impact on how we explore Europa," Curt Niebur, outer planets program scientist at NASA headquarters, said during a NASA planetary sciences subcommittee meeting Wednesday (Sept. 3).
"With an ocean that is tens of kilometers below the ice, most likely, if you can have a plume that’s possibly bringing material from that ocean up to orbit, well, that’s going to affect how you explore," Niebur added.

Image credit: NASA/ESA/K. Retherford/SWRI

distant-traveller:

Giant geysers on Jupiter’s icy moon Europa mysteriously disappear

(Source: space.com)