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Latest Stars Stories

Image 1 - Supernovae Could Have Had Impact On Life On Earth
2012-04-24 12:12:07

New research by a Danish physicist suggests that life might have been influenced by supernovae near the Solar System. When massive stars reach the end of their life, they explode as supernovae, which can be brighter than an entire galaxy of normal stars. The remnants of these events release vast numbers of high-energy charged particles known as galactic cosmic rays (GCR). If a supernova is close enough to our Solar System, the enhanced GCR levels can have direct impacts on the...

Hinode And SOHO Paint An Asymmetrical Picture Of The Sun
2012-04-23 04:36:24

Approximately every 11 years the magnetic field on the sun reverses completely — the north magnetic pole switches to south, and vice versa. It's as if a bar magnet slowly lost its magnetic field and regained it in the opposite direction, so the positive side becomes the negative side. But, of course, the sun is not a simple bar magnet and the causes of the switch, not to mention the complex tracery of moving magnetic fields throughout the eleven-year cycle, are not easy to map out....

Image 1 - Astronomers Use ALMA To Dissect Nearby Planetary System
2012-04-12 11:46:36

[ Watch the Video ] Astronomers have made a breakthrough discovery in understanding a nearby planetary system, giving clues about how these systems form and evolve. Scientists used the Atacama Large Millimeter/submillimeter Array (ALMA) to find that planets orbiting the star Fomalhaut must be smaller than originally thought. The high-resolution images show that both the inner and outer edges of the thin, dusty disk have very sharp edges.  This, as well as computer simulations,...

spacepress-040912-002
2012-04-09 09:46:20

[ Watch the Video ] One day in the fall of 2011, Neil Sheeley, a solar scientist at the Naval Research Laboratory in Washington, D.C., did what he always does — look through the daily images of the sun from NASA's Solar Dynamics Observatory (SDO). But on this day he saw something he'd never noticed before: a pattern of cells with bright centers and dark boundaries occurring in the sun's atmosphere, the corona. These cells looked somewhat like a cell pattern that occurs on the...

A Star Explodes, Turns Inside-Out
2012-04-02 06:01:15

[ Watch the Video ] A new X-ray study of the remains of an exploded star indicates that the supernova that disrupted the massive star may have turned it inside out in the process. Using very long observations of Cassiopeia A (or Cas A), a team of scientists has mapped the distribution of elements in the supernova remnant in unprecedented detail. This information shows where the different layers of the pre-supernova star are located three hundred years after the explosion, and provides...

Astronomers Capture Images of Massive Solar Tornado
2012-04-02 04:35:23

A NASA satellite has captured images of a solar tornado that is said to be five times as wide as Earth and one of the largest such structures ever discovered on our sun, astronomers revealed during the National Astronomy Meeting in Manchester, England, on Friday. According to CNET Senior Writer Martin LaMonica, a video of the solar twister, which was recorded last September by a telescope equipped to the US space agency's Solar Dynamic Observatory (SDO) satellite, was presented during the...

2012-03-29 13:53:43

A new X-ray study of the remains of an exploded star indicates that the supernova that disrupted the massive star may have turned it inside out in the process. Using very long observations of Cassiopeia A (or Cas A), a team of scientists has mapped the distribution of elements in the supernova remnant in unprecedented detail. This information shows where the different layers of the pre-supernova star are located three hundred years after the explosion, and provides insight into the nature of...


Latest Stars Reference Libraries

45_b2fdf71de8e2ca657775a41176f281dc
2009-03-03 21:30:30

Georg Friedrich Julius Arthur von Auwers (September 12, 1838 "“ January 24, 1915) was a German astronomer born in Göttingen, Germany. He attended the University of Göttingen and worked at the University of Königsberg. Auwers specialized in astrometry, making very precise measurements of stellar positions and motions. He detected the companion stars of Sirius and Procyon from their effects on the main star's motion, before telescopes were powerful enough to visually observe them....

0_f3f67f1a9c604fdd3e936cc46b6a745b
2009-03-03 21:08:51

Charles Greeley Abbot (May 31, 1872 "“ December 17, 1973) was an American astrophysicist and astronomer born in Wilton, New Hampshire. He graduated from Phillips Academy in 1891 and MIT in 1894, with a degree in chemical physics. In 1895 Abbot was hired by Samuel Pierpont Langley as an assistant at the Smithsonian Astrophysical Observatory (SAO) despite his lack of experience in astronomy. Hired originally for his laboratory skills, Abbot became acting director of the SAO in 1896. When...

10_d51df03ebdda35e467e058f54046930e2
2004-10-19 04:45:44

Triangulum Australe Constellation -- Triangulum Australe, the Southern Triangle, is completely visible in latitudes south of 20 degrees north from April through June. Its three brightest stars have been called the "Three Patriarchs", Abraham, Isaac and Jacob. It can easily be recognized by its shape, or asterism. This is one of the 12 southern constellations named by Johann Bayer in the early 1600's. The three bright stars in this constellation are so recognizable that they can be...

10_75c58c2c2fd5ac3f2e9b2cacc5e4ae8a2
2004-10-19 04:45:44

Serpens Constellation -- Serpens (the snake) is one of the 88 modern constellations, and was also one of the 48 listed by Ptolemy. Among the modern constellations it is unique in being split into two pieces, Serpens Caput (representing the head of the snake) to the west and Serpens Cauda (representing the tail) to the east. Between these two pieces lies the constellation of Ophiuchus, the serpent bearer. Notable features Since Serpens is regarded as being one constellation...

10_eef4d8c6561bd5850d555248eb08faeb2
2004-10-19 04:45:44

Scorpius Constellation -- Scorpius (the scorpion) is one of the constellations of the zodiac. In western astrology it is known as "Scorpio." It lies between Libra to the west and Sagittarius to the east. It is a large constellation located in the southern hemisphere near the center of the Milky Way. Notable features Scorpius contains many bright stars, including Antares (α Sco), Graffias (β1 Sco), Dschubba (δ Sco), Sargas (θ Sco), Shaula (λ Sco), Jabah (ν Sco),...

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Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.