Category Astronomy/Space

Scientists find Giant Wave Rolling through the Perseus Galaxy Cluster

This X-ray image of the hot gas in the Perseus galaxy cluster was made from 16 days of Chandra observations. Researchers then filtered the data in a way that brightened the contrast of edges in order to make subtle details more obvious. An oval highlights the location of an enormous wave found to be rolling through the gas. Credit: NASA's Goddard Space Flight Center/Stephen Walker et al

This X-ray image of the hot gas in the Perseus galaxy cluster was made from 16 days of Chandra observations. Researchers then filtered the data in a way that brightened the contrast of edges in order to make subtle details more obvious. An oval highlights the location of an enormous wave found to be rolling through the gas. Credit: NASA’s Goddard Space Flight Center/Stephen Walker et al

Combining data from Chandra X-ray Observatory with radio observations and computer simulations, an international team has discovered a vast wave of hot gas in the nearby Perseus galaxy cluster. Spanning 200,000 light-years, the wave is about twice the size of our own Milky Way galaxy...

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Nearby Star is a good Model of our Early Solar System

This is an artist's illustration of the epsilon Eridani system showing Epsilon Eridani b, right foreground, a Jupiter-mass planet orbiting its parent star at the outside edge of an asteroid belt. In the background can be seen another narrow asteroid or comet belt plus an outermost belt similar in size to our solar system's Kuiper Belt. The similarity of the structure of the Epsilon Eridani system to our solar system is remarkable, although Epsilon Eridani is much younger than our sun. SOFIA observations confirmed the existence of the asteroid belt adjacent to the orbit of the Jovian planet. Credit: Illustration by NASA/SOFIA/Lynette Cook

This is an artist’s illustration of the epsilon Eridani system showing Epsilon Eridani b, right foreground, a Jupiter-mass planet orbiting its parent star at the outside edge of an asteroid belt. In the background can be seen another narrow asteroid or comet belt plus an outermost belt similar in size to our solar system’s Kuiper Belt. The similarity of the structure of the Epsilon Eridani system to our solar system is remarkable, although Epsilon Eridani is much younger than our sun. SOFIA observations confirmed the existence of the asteroid belt adjacent to the orbit of the Jovian planet. Credit: Illustration by NASA/SOFIA/Lynette Cook

NASA’s SOFIA aircraft, a 747 loaded with a 2...

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Origin of Milky Way’s hypothetical Dark Matter signal may not be so Dark

An excess of gamma-rays coming from the center of the Milky Way is likely due to a population of rapidly spinning, very dense and highly magnetized neutron stars, called pulsars. Credit: NASA/CXC/University of Massachusetts/D. Wang et al.; Greg Stewart/SLAC National Accelerator Laboratory

An excess of gamma-rays coming from the center of the Milky Way is likely due to a population of rapidly spinning, very dense and highly magnetized neutron stars, called pulsars. Credit: NASA/CXC/University of Massachusetts/D. Wang et al.; Greg Stewart/SLAC National Accelerator Laboratory

A mysterious gamma-ray glow at the center of the Milky Way is most likely caused by pulsars – the incredibly dense, rapidly spinning cores of collapsed ancient stars that were up to 30 times more massive than the sun. That’s the conclusion of a new analysis by an international team including researchers from the Department of Energy’s SLAC National Accelerator Laboratory...

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Cassini Finds ‘The Big Empty’ Close to Saturn

Cassini finds 'The Big Empty' close to Saturn

NASA’s Cassini spacecraft is shown diving through the gap between Saturn and its rings in this artist’s depiction. Credit: NASA/JPL-Caltech

As Cassini spacecraft prepares to shoot the narrow gap between Saturn and its rings for the second time in its Grand Finale, Cassini engineers are delighted, while ring scientists are puzzled, that the region appears to be relatively dust-free. This assessment is based on data Cassini collected during its first dive through the region on April 26. With this information in hand, the Cassini team will now move forward with its preferred plan of science observations. “The region between the rings and Saturn is ‘the big empty,’ apparently,” said Cassini Project Manager Earl Maize of NASA’s JPL in Pasadena, California...

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