Not one but two planets may orbit the nearest star around our Sun, a small red dwarf called Proxima Centauri, about 4.24 light-years away.
"We are pleased to be able to show you for the first time" What is a new candidate planet around Proxima for us called Proxima c? "Mario Damasso from the Italian Observatory of Turin announced on April 12 during of the conference "Breakthrough Discussion 2019".
"It's just a candidate," he says. "This is very important to underline."
When the planet is there, it is at least six times as massive as Earth – which becomes a so-called Super Earth – and it takes 1,936 days to lay down once around its star. This means that the average surface temperature of the planet is far too cold for liquid water.
"Is this planet habitable? Well, not really – it's pretty cold, "says Fabio Del Sordo of the University of Crete.
In 2016, scientists unveiled the Pale Red Dot Project the first known world orbiting Proxima Centauri – one Planets at least 1.3 times as massive as Earth may be warm enough for life as we know it to thrive on its surface Scientists identified this planet, called Proxima Centauri b, by examining how its gravity tugging at Proxima Centauri and causing the star to wobble.
Recently Damasso and Del Sordo decided to re-examine the data used to locate Proxima b, processing it a bit differently, removing the signals from Proxima b and the intrinsic star activity and added 61 measurements taken for a further 549 days by the HARPS spectrograph attached to a telescope at La Silla Observ atorium in Chile.
Overall, then, for about 17 years, they had data about the wiggling and shaking of the star. In it, they discovered a signal that another planet might be in orbit around Proxima Centauri. If it's there – and that's still a handsome "if" – Primaima c needs just over five Earth years to trudge around its star at a distance that is 1.5 times farther than Earth's the sun is removed.
"This detection is very demanding," says Del Sordo. "We've often wondered if this is a real planet. What is certain, however, is that even if this planet is an airlock, we should continue working to create even stronger foundations.
A document describing the discovery was submitted to a peer-reviewed journal. Photo by ESO, M. Kornmesser
Scientists will continue to collect data on the star and plan to do so Using information from the European Space Agency's Gaia spacecraft to further investigate the movement of Proxima Centauri.
[http://en.wikipedia.org/wiki/Sexy] , whereby their interpretation of the wobbly movements is refined. They also suggest that the planet could be seen directly with future telescopes.
Also observations of the star by the Atacama Large Millimeter / Submilliter Array or ALMA could support the possibility that several planets are in orbit: in these areas images, Proxima Centauri is surrounded by dust roads, which are believed to be formed by orbiting objects. In addition, ALMA has discovered another bright source in the Proxima system, which is located approximately the distance in which Proxima c may orbit.
"There is an unknown source – it is something. It could be a background source, it could be noise; We do not know, "says Del Sordo.
" This is truly an amazing, amazing result – I hope it will withstand the scientific research over the next few months and years, "says Rene Heller of the Max Planck Institute for Solar Energy Solar System Research.
Lauren Weiss of the University of Hawaii suggests that the team may see a signal caused by a combination of other planets in the system and stellar noise.
"There may be more planets, but not more during the time you announce the candidate, "she said during the Damasso and Del Sordo conference," I do not really know what we can do except what you rightly said – it's going to be a long one Way. "Submission.