David Reneke's World of Space and Astronomy 21 Aug 2017, 00:00 UTC
Universe Today 18 Aug 2017, 17:49 UTC In the past few years, there has been no shortages of extra-solar planets discoveries which orbit red dwarf stars. In 2016 and 2017 alone, astronomers announced the discovery of a terrestrial (i.e. rocky) planet around Proxima Centauri (Proxima b), a seven-planet system orbiting TRAPPIST-1, and super-Earths orbiting the nearby stars of LHS 1140 (LHS 1140b), and GJ 625 (GJ 625b). In what could be the latest discovery, physicists at the University of Texas Arlington (UTA) recently announced the possible discovery of an Earth-like planet orbiting Gliese 832, a red dwarf star just 16 light years away. In the past, astronomers detected two exoplanets orbiting Gliese 832. But after conducting a series of computations, the UTA team indicated that an additional Earth-like planet could be orbiting the star. The study which details their findings, titled “Dynamics of a Probable Earth-mass Planet in the GJ 832 System“, recently appeared in The Astrophysical Journal. Led by Dr. Suman Satyal – a physics researcher, lecturer and laboratory supervisor at UTA – the team sought to investigate the stability of planetary orbits around Gliese 832 using a numerical and detailed phase-space analysis. Artistic representation of the potentially habitable exoplanet Gliese 832c as compared with Earth. ...
Drew Ex Machina 18 Aug 2017, 13:21 UTC I doubt that there are many space enthusiasts or even scientists out there who remember the first time they ever heard mention of the name Tau Ceti (also written τ Ceti). One of the nearest Sun-like stars known, τ Ceti has crept into popular cultural consciousness starting with science fiction stories dating back at least two thirds of a century. My first exposure to the name was probably during the early 1970s while watching syndicated reruns of the classic Star Trek episode, “Whom Gods Destroy”, or possibly any number of scifi movies that graced weekend and late-night broadcast television of the era. I would dare say most people would have similar experiences about their introduction to this star.
io9 Space 18 Aug 2017, 13:10 UTC Oh Florence, we really needed you this month. There’s a petulant species of brainy monkeys that just can’t seem to get along that probably deserves to be completely wiped out in a fiery collision. But there you go, flying right on by.
The Planetary Society Blog 18 Aug 2017, 11:00 UTC The August 21st, 2017 solar eclipse is poised to be one of the most spectacular celestial events of the year. And, surely, it will be a pleasant sight for anyone who loves looking up at the sky, like most of us who are members of or love to follow The Planetary Society!
Scientific American 18 Aug 2017, 11:00 UTC Glowing "jellyfish" galaxies have revealed a new way to power some of the most powerful objects in the universe. The same process that feeds the most voracious black holes at the galactic centers may also create dangling "tentacles" of newborn stars, a new study found...
AmericaSpace 17 Aug 2017, 23:51 UTC
The Planetary Society Blog 17 Aug 2017, 23:07 UTC
Astro Watch 17 Aug 2017, 21:28 UTC Astrophysicists at the University of Texas at Arlington have predicted that an Earth-like planet may be lurking in a star system just 16 light years away. The team investigated the star system Gliese 832 for additional exoplanets residing between the two currently known alien worlds in this system. Their computations revealed that an additional Earth-like planet with a dynamically stable configuration may be residing at a distance ranging from 0.25 to 2.0 astronomical unit (AU) from the star.“According to our calculations, this hypothetical alien world would probably have a mass between 1 to 15 Earth's masses,” said the lead author Suman Satyal, UTA physics researcher, lecturer and laboratory supervisor. The paper is co-authored by John Griffith, UTA undergraduate student and long-time UTA physics professor Zdzislaw Musielak.The astrophysicists published their findings this week as “Dynamics of a probable Earth-Like Planet in the GJ 832 System” in The Astrophysical Journal.UTA Physics Chair Alexander Weiss congratulated the researchers on their work, which underscores the University’s commitment to data-driven discovery within its Strategic Plan 2020: Bold Solutions | Global Impact.“This is an important breakthrough demonstrating the possible existence of a potential new planet orbiting a star close to our own,” Weiss said. “The fact ...