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ScienceDaily: Space & Time News |
Overflowing crater lakes carved canyons across Mars Posted: 16 Nov 2018 01:45 PM PST Today, most of the water on Mars is locked away in frozen ice caps. But billions of years ago it flowed freely across the surface, forming rushing rivers that emptied into craters, forming lakes and seas. New research has found evidence that sometimes the lakes would take on so much water that they overflowed and burst from the sides of their basins, creating catastrophic floods that carved canyons very rapidly, perhaps in a matter of weeks. |
Universal laws in impact dynamics of dust agglomerates under microgravity conditions Posted: 16 Nov 2018 08:06 AM PST Scientists have found evidence that when projectiles hit soft clumps of dust or hard clumps of loose glass beads, the scaling laws for energy dissipation and energy transfer are the same in each case. This helps us understand how granular clumps stick together, and how planets are formed. |
Astronomers find possible elusive star behind supernova Posted: 15 Nov 2018 11:49 AM PST Astronomers may have finally uncovered the long-sought progenitor to a specific type of exploding star by sifting through NASA Hubble Space Telescope archival data. The supernova, called a Type Ic, is thought to detonate after its massive star has shed or been stripped of its outer layers of hydrogen and helium. |
Astronomers detect once-in-a-lifetime gamma rays Posted: 15 Nov 2018 11:49 AM PST It's not every day you get to observe a gamma-ray binary system. In fact, it's a once-in-a-lifetime experience comparable to seeing Halley's Comet or a solar eclipse. |
Auroras unlock the physics of energetic processes in space Posted: 15 Nov 2018 05:30 AM PST A close study of auroras has revealed new ways of understanding the physics of explosive energy releases in space. |
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