K2-288Bb was discovered by volunteers that examined light-curve data from Kepler with their eyes and not with a program.
18 April 2018 has launched a new telescope created to search for rocky planets the size of Earth, TESS. But we already know that it is located in the constellation Taurus in 226 light years from Earth.
This year, Kevin Hardegree-Ullman, postdoctoral scholar in astronomy at the California Institute of Technology, announced that the Spitzer space telescope followed up on that discovery and discovered a sixth planet, K2-138 g, smaller than Neptune, that orbits the star every 42 days. The new planet seems to orbit the smaller star, and it needs 3.1 days to do it.
An artist's visualization of the exoplanet LHS 3884b. Despite being only three times as large as the Earth, the planet is said to be 23 times as massive. It's a rocky planet orbiting a cool M-type dwarf star at only one-fifth the size of our Sun. It's so close to its sun that some of its rocky surface could be molten lava during daytime.
What's even more exciting are hints the HD 21749 system holds a second candidate planet about the size of Earth that orbits the star every 8 days. It appears to have the longest orbital period of the three planets so far identified by TESS.
"It's the coolest planet we know of around a star this bright".
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TESS launched to Earth orbit in April 2018 on a mission to find alien worlds circling stars in our solar system's neighborhood. Their proximity to Earth will enable detailed characterization of the planets through follow-up observations from space- and ground-based telescopes. But that won't be the only thing TESS will see as it stares into the same parts of the sky for months at a time.
An artist's conception shows NASA's Transiting Exoplanets Survey Satellite, or TESS, with an assortment of exoplanets. Six of these events, highlighted in this movie, are supernovae - exploding stars - located in distant galaxies.
"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.
"Just to put that number of six supernovae in one month in context, the only other mission that could really do this was the Kepler spacecraft, and Kepler found five supernovae in four years of operation". For what it's worth, several TESS finds have been the subject of pre-print research papers. As a result, data collected during the first few days of observations were simply ignored, according to the statement.
TESS works better than team members had dared to dream, says George Ricker, a physicist at MIT and the mission's principal investigator.
The pair were working as interns with Joshua Schlieder, an astrophysicist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, at the time.
"Based on the brightness and shape of that flare, there's a lot of science that can be done", stated Michael Fausnaugh, an astronomer at MIT.