The "Science and Space" Thread #2

ekim68

Mike
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White dwarfs reveal new insights into the origin of carbon in the universe


A new analysis of white dwarf stars supports their role as a key source of carbon in galaxies. Every carbon atom in the universe was created by stars, but astrophysicists still debate which types of stars are the primary source of the carbon in our galaxy. Some studies favor low-mass stars that blew off their envelopes in stellar winds and became white dwarfs, while others favor massive stars that eventually exploded as supernovae.
200706140858_1_900x600.jpg
 

ekim68

Mike
Joined
Jul 8, 2003
Messages
56,343

ekim68

Mike
Joined
Jul 8, 2003
Messages
56,343

Scientists propose plan to determine if Planet Nine is a primordial black hole


Scientists at Harvard University and the Black Hole Initiative (BHI) have developed a new method to find black holes in the outer solar system, and along with it, determine once-and-for-all the true nature of the hypothesized Planet Nine. The paper, accepted to The Astrophysical Journal Letters, highlights the ability of the future Legacy Survey of Space and Time (LSST) mission to observe accretion flares, the presence of which could prove or rule out Planet Nine as a black hole.
 

ekim68

Mike
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56,343

NASA’s James Webb Space Telescope Completes Comprehensive Systems Test



Now that NASA’s James Webb Space Telescope has been assembled into its final form, testing teams seized the unique opportunity to perform a critical software and electrical analysis on the entire observatory as a single, fully connected vehicle.

Known as a Comprehensive Systems Test or CST, this was the first full systems evaluation that has ever been run on the assembled observatory, and one of the final first-time activities the team will perform. Similar performance evaluations have been completed in Webb’s history, using simulations and surrogates to infer data about pieces of the spacecraft that had not yet been assembled. Now that Webb is fully built, simulations and simulators are no longer needed, and engineers can confidently assess both its software and electronic performance.
 

ekim68

Mike
Joined
Jul 8, 2003
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The comet can be seen now and for a few days... :cool:


How to See Comet NEOWISE


Observers in the Northern Hemisphere are hoping to catch a glimpse of Comet NEOWISE as it zips through the inner solar system before it speeds away into the depths of space. Discovered on March 27, 2020 by NASA’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission, Comet NEOWISE is putting on a dazzling display for skywatchers before it disappears, not to be seen again for another 6,800 years.
 

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