Two for Teegarden: Pint-sized Star System Discovered Right Next Door

01 teegardensstar

01 teegardensstar

And now, in a stroke of cosmic luck, astronomers have announced the possible discovery of not one, but two Earth-sized exoplanets orbiting an ancient star right on our galactic doorstep. (A light-year is the distance that light travels in a year, or roughly 6 trillion miles or 10 trillion kilometers.) The two planets look an very bad lot like Earth and our neighboring worlds, the researchers said. Ribas believes that "both Teegarden's planets are potentially habitable", and is confident that "we will eventually see if they [planets orbiting Teegarden's Star] are actually habitable and, perhaps, even inhabited", National Geographic reports.

They are just a little bigger than the Earth and are situated in the "habitable zone" where water can exist as a liquid, according to the researchers.

Despite their tiny star and compact orbits, "the two planets resemble the inner planets of our solar system", said Mathias Zechmeister, from the Institute for Astrophysics at the University of Göttingen, in the press release.

Finally, the conclusion until now is that Teegarden b is much similar to Earth, but it doesn't mean that one of the planets is habitable.

Jamal Khashoggi killing: Saudi crown prince 'should face investigation'
There was also " credible evidence pointing to the crime scenes (in Turkey) having been thoroughly, even forensically, cleaned". Trials in Saudi Arabia can be shrouded in secrecy, she noted, insisting that Khashoggi case should be open to public scrutiny.

This graphic shows the top 19 potentially habitable planets as of June 2019, sorted from the most Earth-like to the least. Stars come in a wide variety of sizes, masses and temperatures. Stars that are larger, hotter and more massive than the Sun (A-dwarfs) have their habitable zone much farther out from the star. About ten times lighter than our own Sun and one of the smallest stars we know of, the old red dwarf, which is roughly 8 billion years old, has proved a challenge to research. The telescope is in Spain's Calar Alto Observatory, and after three years of close observation and more than 200 measurements, they found signs that indicate the existence of the two new planets.

While the team predicts that Teegarden b completes its orbit in 4.9 Earth days, and c does so in 11.4 days, Weiss argues that their journey might go even faster than that, which would inevitably reduce their habitability. Thus, their orbits would be quicker. The research team tried to find more evidence of planets using the "transit" method, which looks for subtle dips of brightness as a world passes in front of its star.

A discovery is making the astronomers think that they founded two planets that are like Earth.

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