Space

A team of astronomers writing in Astrophysical Journal Letters has shown that the two stars in the binary HM Cancri revolve around each other in a mere 5.4 minutes, making HM Cancri the binary star with by far the shortest known orbital period. It is also the smallest known binary; The system is no larger than 8 times the diameter of the Earth.

The team was able to prove the short binary period of the system by detecting the velocity variations in the spectral lines in the light of HM Cancri. These velocity variations are induced by the Doppler effect, caused by the orbital motion of the two stars revolving around each other. The Doppler effect causes the lines to periodically shift from blue to red and back.
ESA’s Herschel Space Observatory has revealed the chemical fingerprints of potential life-enabling organic molecules in the Orion Nebula, a nearby stellar nursery in our Milky Way galaxy. This detailed spectrum, obtained with the Heterodyne Instrument for the Far Infrared (HIFI) - one of Herschel's three innovative instruments - demonstrates the gold mine of information that Herschel-HIFI will provide on how organic molecules form in space. Several German Institutes contributed essential parts to the HIFI instrument: the Universität zu Köln and two Max Planck Institutes: Radioastronmie (Bonn) and Sonnensystemforschung (Lindau).

The recent earthquake in Chile was so big, it altered the earths rotation.  So if you notice the days getting shorter, blame the quake.  According to NASA scientist Richard Gross, the earth has been knocked about 3 inches off of its axis!  This resulted in a 1.26 microsecond shortening of the day.

Most people think that science is done behind closed doors with expensive equipment, fiddling around with complicated technology by scientists wearing cheap lab coats. The rest of us merely stand on the outside waiting for some interesting discoveries to be made. Well, although the caricature is partly true there are many experiments where the amount of data is so huge that the research teams have enlisted the help of citizen scientists.
The Bud Light commercial about astronomers is astoundingly accurate.  Details they get right include:
  • we like celebrating just about anything, good or bad
  • we drink beer in large groups
  • we sometimes make mistakes but, hey, that's science
  • playing with fire extinguishers is fun
  • science chicks are hot (seriously... brains, cuteness and ability to stay up late = win!)
Cosmic oddities have set astronomers onto ‘the case of the missing neighboring galaxies’. Located half a billion light-years from Earth, ESO 306-17 is a large, bright elliptical galaxy in the southern sky known as a fossil group. Astronomers use that term to emphasize the isolated nature of these galaxies but are they really like fossils,  the last remnants of a once-active community, or did ESO 306-17 gobble up its next-door neighbors? 
Astronomers have discovered a star that may have been among the second generation of stars to form after the Big Bang.

Located in the dwarf galaxy Sculptor some 290,000 light-years away, S1020549 has a remarkably similar chemical make-up to the Milky Way's oldest stars. Its presence supports the theory that our galaxy underwent a "cannibal" phase, growing to its current size by swallowing dwarf galaxies and other galactic building blocks. The discovery of the new star is detailed in Nature.

Dwarf galaxies are small galaxies with just a few billion stars, compared to hundreds of billions in the Milky Way. In the "bottom-up model" of galaxy formation, large galaxies attained their size over billions of years by absorbing their smaller neighbors.
NASA creates dramatic artistic renderings of upcoming launches, in full color animation, often scaled for the IMAX screen.  They're great eye candy, but they are also informative, and have genuine science at their core.

For example, the STEREO solar panel deployment is fascinating to watch, even as a simulation.  It uses a highly accurate 3D model of the actual spacecraft, and attempts to balance physical realism with artistic license.  Noteworthy is the robotic nature of the deployment and the oscillation of the solar panels as they deploy.
Comets are thought to be some of the oldest, most primitive bodies in the solar system, but new research on the comet Wild 2 indicates that inner solar system material was transported to the comet-forming region at least 1.7 million years after the formation of the oldest solar system solids.

Published in Science, the research provides the first constraint on the age of cometary material from a known comet. The findings are published in the Feb. 25 edition of Science Express.

The NASA Stardust mission to comet Wild 2, which launched in 1999, was designed around the premise that comets preserve pristine remnants of materials that helped form the solar system. In 2006, Stardust returned with the first samples from a comet.
IT arrived. With little fanfare, an ordinary cardboard box full of packing peanuts has thrown my life into panic and confusion. For the mighty packing slip says it all. "Parts&Packing List". Inside is... a piece of paper. And, hopefully, buried under the packing peanuts, also a satellite.

box with packing peanuts

My satellite. My InterOrbital pico-satellite. "Project Calliope", the satellite. The THING I'm BUILDING in my BASEMENT (dum-dum-dah-dum!). Did you ever wonder just what a satellite is made of? The answer is... this!