The new exoplanet, named HD 21749b, was discovered by NASA's Transiting Exoplanet Survey Satellite (TESS), which launched in April. Citizen scientists using data from NASA's Kepler space telescope, discovered a planet roughly twice the size of Earth located within its star's habitable zone, the range of orbital distances where liquid water may exist on the planet's surface.
"It's a very exciting discovery due to how it was found, its temperate orbit and because planets of this size seem to be relatively uncommon", said Adina Feinstein, University of Chicago graduate student and lead author of the paper on the discovery, published by the Astronomical Journal.
The new planet's surface reaches about 300℉, which, according to the MIT Kavli Institute for Astrophysics and Space Research, is "relatively cool", considering the proximity to its star, which is nearly as bright as our Sun. "But here we were lucky, and caught this one, and can now study it in more detail", Dragomir said.
It is three times bigger than Earth, which classes it as a Sub-Neptune exoplanet, but it is surprisingly 23 times its mass.
Kepler has discovered more than 2,600 confirmed planets, out of which 50 are of the same size and temperature as the Earth.
However, it is unlikely that the planet is rocky and therefore habitable; it's more likely made of gas, of a kind that is much more dense than the atmospheres of either Neptune or Uranus.
Currently, the team is investigating a second planet in the system with a shorter 7.8-day orbit. If the light "dips", momentarily decreasing in brightness, it suggests that a planet may be orbiting the star.
Those researchers had also detected a signal, but they couldn't conclusively attribute it to a planet, Dragomir said. His team is now writing a proposal to NASA asking that TESS's mission be extended past its initial two years.
"Some of the most interesting science occurs in the early days of a supernova, which has been very hard to observe before TESS", said Michael Fausnaugh, a TESS researcher at the MIT Kavli Institute. Observing just one sector of the sky once it began science operations, researchers announced at AAS that TESS has already identified six supernovae - a remarkable finding.
The trade clash reflects American anxiety about China's rise as a potential competitor in telecommunications and other technology. Kaplan, Assistant Secretary for Fossil Energy Steven Winberg, and Under Secretary for International Affairs David Malpass.
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We will never stop in our fight against Radical Islamic Terrorism!' US President Donald Trump hailed Badawi's reported killing. Another of the alleged planners, Saudi-born Abd al-Nashiri, is being held at Guantanamo Bay and could face the death penalty.
Jason Licht is the general manager of the Bucs and worked in the Cardinals front office while Arians coached in Arizona. Byron Leftwich will become Arians' new offensive coordinator, a source told NFL Network's Ian Rapoport .
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Half a year later, we got married in spite of being two people who actively rebuked the idea of marriage. Clearly this angle shows that I moved from her being behind me and yet from the side it still happens.
Leonard, who was booed nearly everytime he touched the ball, had an average night with 21 points, 5 assists and 2 steals. After struggling to find his stroke from deep, Thompson is 10 for 17 on three-pointers the past three games.
The AASU activists tried to ransack a BJP office in Dibrugarh, prompting police to resort to lathicharge and fire rubber bullets. Rajnath Singh highlighted the discrimination and religious persecution faced by the minorities in these countries.
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Cash bonuses for India heroes after Australia Test triumph
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Oil Rises 3 percent; Lifted by OPEC Cuts
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Hyundai's 'Elevate' concept is a four-legged first responder
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Thousands stung in jellyfish 'invasion'
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