A planet observed crossing in front of, or transiting, a low-mass star has been determined to be about the size of Jupiter. While hundreds of Jupiter-sized planets have been discovered orbiting larger sun-like stars, it is rare to see these planets orbiting low-mass host stars and the discovery could help astronomers to better understand how these giant planets form.
"This is only the fifth Jupiter-sized planet transiting a low-mass star that has been observed and the first with such a long orbital period, which makes this discovery really exciting," said Caleb Cañas, lead author of the paper and a Ph.D. student at Penn State and NASA Earth and Space Science Fellow.
While you're here, how about this:
Astronomers Find Warm Jupiter Orbiting Cool Red Dwarf | Astronomy | Sci-News.com
A puffy gas giant slightly larger than Jupiter has been discovered orbiting the early M-type dwarf star TOI-1899, thanks to new data from NASA's Transiting Exoplanet Survey Satellite (TESS) and the Habitable-zone Planet Finder (HPF) on the 10-m Hobby-Eberly Telescope at McDonald Observatory.
An artist's impression of the warm-Jupiter exoplanet TOI-1899b and the red dwarf TOI-1899, the lowest-mass star known to host a transiting warm Jupiter. Image credit: Sci-News.com.
Exo-planets orbiting carbon-rich stars may be made of DIAMONDS | Daily Mail Online
Published: 18:34 EDT, 14 September 2020 | Updated: 20:07 EDT, 14 September 2020
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Stars like the Sun, with lower carbon to oxygen ratios, are typically orbited by planets composed of water and granite, with very low diamond content.
But planets circling stars with higher carbon ratios tend to be carbon-rich themselves and under the right conditions that carbon can become diamond.
To test their theory, researchers subjected a sample of silicon carbide immersed in water to intense pressure and heat using lasers and X-ray measurements.
Meet the experts: What are comets? | Astronomy Essentials | EarthSky
Comets are loosely packed balls of ice and dust orbiting our sun, that sometimes become visible in Earth’s skies. A comet’s tail may stretch across millions of miles of space.
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From the European Space Agency. The video above is from Meet the Experts series of the European Space Agency (ESA). In it, comet scientist Charlotte Götz of ESA discusses comets, their formation and their study. She explains that comet nuclei are relatively small – about the size of a small earthly town – and that they are loosely packed balls of ice and dust. The comets we know about are mostly potato-shaped, but some are oddly shaped .
Other things to check out:
Scientists spot a Jupiter-like planet orbiting a cool star [Video]
Russian scientists create model to forecast space debris' orbits for 100 years ahead - Science
TOMSK, September 9. /TASS/. Physicists at the Tomsk State University have created a mathematical model for computing the trajectories of space debris, such as defunct space satellites and fragments of spacecraft, for 100 years ahead and more. The Russian Foundation for Basic Research has established a special grant for determining the trajectories of such objects in near-Earth space, the university’s press-service has said.
Back in 1978 NASA scientist Donald Kessler warned that the accumulation of space debris in near-Earth space and their growing density might result in a situation where the collision of two such objects would trigger a chain reaction resulting in the destruction of all satellites operating at the altitude of the International Space Station and higher.
Bloomberg - Are you a robot?
NASA's Hubble snaps pictures of stars orbiting closely to one another like swarm of bees -
On September 14, the National Aeronautics and Space Administration (NASA), posted a tweet on its official Twitter handle, featuring a cluster of tightly packed stars from a distant galaxy. In the stunning picture, Twitter users can see 100s to 1000s of stars packed closely together and shimmering.
Most of the brightest stars in this picture appear to be emitting blue and orange colours, while the backdrop of space appears to be dark brown in colour. This breathtaking picture was snapped by none other than NASA and European Space Agency’s (ESA) Hubble telescope and was posted on NASA’s official website nasa.gov on September 11.
Happening on Twitter
Despite being so far away from the #Sun, #Jupiter's moons are hot—hotter than they should be! The beautiful, icy mo… https://t.co/k97mN9zMwP weatherindia (from India) Fri Sep 11 09:57:51 +0000 2020
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