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When small stars the size of our sun die, they go out with a bang. As the star runs out of hydrogen fuel, it cools and expands to become a gargantuan red giant. After ejecting up to 80 percent of its mass in a protracted explosion, the star will collapse in on itself, leaving behind a small core that slowly continues to cool.
Lead author Andrew Vanderburg , an astronomer at the University of Wisconsin-Madison, and his team published their find in Nature . The team used NASA’s Transiting Exoplanet Survey Satellite (TESS) and the now-retired Spitzer Space Telescope , as well as many on-ground observations, to confirm the find.
Quite a lot has been going on:
This 'Pi Planet' orbits is star every 3.14 days – BGR
You don’t have to be a total math nerd to appreciate pi. Pi is a constant that is used in mathematics and many calculations, and it’s the ratio of a circle’s circumference to its diameter. It never changes, which is why it’s so useful in math, but it’s also made the leap to pop culture. “Pi Day,” which is March 14th (3/14) is a nod to pi’s first three digits, 3.14.
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Pi goes on much longer than that (forever, actually), but its first three digits are what is used most commonly in simple math and in cultural references. Now, astronomy is getting in on the action, as researchers include scientists from MIT have spotted a planet much like Earth in size that is orbiting its star every (you guessed it) 3.14 days. It’s officially the pi planet.
Astronauts take shelter as space station dodges orbital junk | Space
Controllers maneuvered the station away from a potential collision with a piece of debris today (Sept. 22) at 5:19 p.m. EDT (2119 GMT). They did so by firing the thrusters on a Russian Progress cargo spacecraft that's docked to the orbiting lab's Zvezda service module, NASA officials said in an update today.
This was done "out of an abundance of caution," the update said. "At no time was the crew in any danger."
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The trio's stay near the Soyuz, which will bring them back down to Earth next month, was quite brief.
"Ultrahot Neptune" exoplanet discovered orbiting star in under a day
Astronomers have discovered a new exoplanet that belongs in a brand new class – an "ultrahot Neptune." Known as LTT 9779b, the planet orbits extremely close to its star, and raises questions about how such a system came to be.
LTT 9779b is relatively nearby at 260 light-years away, and it's so close to its star that its year is less than an Earth day – it zips around once every 19 hours – and intense radiation is searing the planet to temperatures over 1,700 °C (3,092 °F), earning it the "ultrahot" title.
This may worth something:
Giant planet found orbiting dead star 80 light-years away - New York Daily News
A gigantic exoplanet dubbed WD 1586 b has been discovered orbiting a white dwarf, a dead star. It's the first recorded instance of this phenomenon, according to a study published in the journal Nature .
The planet, which is outside of our solar system, is about 80 light-years from Earth and roughly the size of Jupiter (approximately 318 times larger than Earth).
WD 1586 b whips around its dead star which is located in the Draco constellation, completing an orbit every 34 hours. Earth takes a year to orbit the Sun.
📹KU astronomer plays key role in unique celestial discovery
LAWRENCE — A University of Kansas astronomer played a key role on the team that this past week announced the first-ever discovery of a planet orbiting a white dwarf star.
The finding, published in Nature, shows the likely presence of a Jupiter-sized planet, named WD 1856 b, orbiting the smaller star remnant every 34 hours.
"This planet is roughly the size of Jupiter, but it also has a very short orbital period — a year on this planet is only 1.4 days, so it's quickly whipping around its white dwarf star," said Ian Crossfield, assistant professor of physics & astronomy at KU, who is a co-author on the paper.
AFRL Satellite To Track Up To The Moon; Space Force-NASA Tout Cooperation « Breaking
WASHINGTON: The Air Force Research Laboratory (AFRL) is designing a pathfinder satellite to find and track objects in the vast area of cislunar space, as well as those orbiting the Moon, says Col. Eric Felt, head of AFRL’s Space Vehicles Directorate.
“Its mission will be to find fix and track attract objects that are out there near the Moon that might not otherwise be known, and just in general mature our confidence in being able to operate in that region since we don’t have a lot of satellites that have been up in that region before,” Felt explained.
Astronomers Discover Exoplanet "Pi Earth" That Orbits Star Every 3.14 Days [Video]
Happening on Twitter
Hubble's new images of Jupiter capture the giant planet's stormy atmosphere. The Great Red Spot, a storm big enoug… https://t.co/KMxQH9sQkK NASAHubble (from Goddard Space Flight Center) Thu Sep 17 17:06:59 +0000 2020
The planet is about seven times larger than the white dwarf star that it orbits every 34 hours. https://t.co/nmzL3oJgHb SmithsonianMag (from Washington, D.C.) Wed Sep 23 00:30:03 +0000 2020
📸 #Jupiter: as you might not have seen it before. These observations in ultraviolet/visible/near-infrared light mad… https://t.co/wDay9VRX9C esa (from Europe) Thu Sep 17 17:10:02 +0000 2020
New Hubble imaging of Jupiter near its closest approach to Earth captured three exciting features of the giant gas… https://t.co/Y5iCXvgMLq HubbleTelescope Thu Sep 17 17:15:12 +0000 2020
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