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The Daily Cosmos or Interesting Facts about the Universe

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The Daily Cosmos or Interesting Facts about the Universe

Cosmology
Astrophysics
Astronomy

Location: #science
Members: 57
Latest Activity: on Wednesday

 

Cosmology - Astrophysics - Astronomy

 

Hubble Wallpaper - Awesome Hubble Images

Discussion Forum

Big Bangers' Imaginations Supply Their Story's Only Support.

Started by Tom Sarbeck. Last reply by Joey Daniel Smith Dec 22, 2018. 7 Replies

'Hot Jupiter'

Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016. 7 Replies

NASA's Solomon's Choice.

Started by Davy Oct 3, 2013. 0 Replies

This is Science at Work.

Started by Davy. Last reply by Davy Aug 15, 2013. 1 Reply

Comment Wall

Nice Comment

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Comment by Stephen on Wednesday

The time frames for this event are just mind-boggling.

Comment by Doone on Wednesday
On the Zanclean megaflood event that refilled the Mediterranean Sea through the Strait of Gibraltar 5.3 million years ago: https://sciencedirect.com/science/article/pii/S0012825219302521?via%3Dihub
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Comment by Doone on February 15, 2020 at 11:13am
A timeline of the discoveries of the chemical elements (Credit: Compound Interest)  Image
Comment by Doone on February 15, 2020 at 11:11am
Understanding Lunar Cycles (Credit: xkcd)
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Comment by Doone on February 6, 2020 at 5:39pm
The USGS has released GIS data from its new Unified Geologic Map of the Moon. https://buff.ly/2UasGu5
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Comment by Stephen on February 3, 2020 at 12:29am

Voyager 2 Went Into Fault Protection Mode, But Engineers Brought it Back Online

NASA’s Voyager 2 spacecraft went into fault protection mode on Tuesday January 28th. The fault protection routines automatically protect the spacecraft in harmful conditions. Both Voyagers have these routines programmed into their systems.
After it happened, NASA engineers were still in communication with the spacecraft and receiving telemetry.
The fault protection stems from a maneuver attempted on January 25th. On that day, Voyager 2 was supposed to execute a scheduled rotation maneuver. The spacecraft rotates itself 360 degrees to calibrate one of its instruments, MAG, the triaxial fluxgate magnetometer. That instrument is investigating the solar wind boundary with the interstellar magnetic field and beyond. 

NASA says there was a delay in the maneuver, which caused two systems that draw a lot of power to be on at the same time. There’s a tight power budget on Voyager 2, because its radioisotope thermoelectric generators are running down. To protect itself, the spacecraft went into its fault-protection mode. In that mode, it shut down scientific instruments to make up for the power deficit. By January 28th, engineers had successfully shut down one of the two high-power-drawing systems, and turned its science instruments back on.
After that, they still weren’t receiving data from the spacecraft.
Voyager 2 is still running, but its power situation is precarious. Mission engineers are constantly evaluating the status of the power system, and they know that it’s losing about 4% of its power each year. A lot of power is needed to keep systems on the spacecraft from freezing, including fuel lines. If those lines froze, and broke, then Voyager 2 would no longer be able to point its antenna towards Earth, and the mission would effectively be over.

https://www.universetoday.com/144812/voyager-2-went-into-fault-prot...

Comment by Doone on February 1, 2020 at 2:37pm

This is one interesting image

From the archives: String theory, the multiverse and other ideas of modern physics are potentially untestable. At a historic meeting in Munich, scientists and philosophers asked: should we trust them anyway? https://quantamagazine.org/physicists-and-philosophers-debate-the-boundaries-of-science-20151216/
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Comment by Doone on January 22, 2020 at 8:16pm
#xkcd: Ground vs Air
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Comment by Davy on January 19, 2020 at 7:00am

I was reading what one of the thinkers of the Age of Enlightenment was saying about art and he said art is frozen poetry. 
I like art that tells you a story just like a good poem does. 

Comment by Mrs.B on January 18, 2020 at 7:58pm

Yup, it has to be pleasing for any enjoyment for me.

 
 
 

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