Meghan is a senior writer at Space.com and has more than five years' experience as a science journalist based in New York City. She joined Space.com in July 2018, with previous writing published in outlets including Newsweek and Audubon. Meghan earned an MA in science journalism from New York University and a BA in classics from Georgetown University, and in her free time she enjoys reading and visiting museums. Follow her on Twitter at @meghanbartels.
likely both once held water on their surfaces, some have proposed an"optimistic" habitable zone, which TOI 700 e resides in.
Gilbert and her colleagues estimate that TOI 700 e is about 95% the size of Earth, so it's likely rocky and orbits about once every 28 Earth days — putting it in between TOI 700 c and d. The newly discovered world is also likely tidally locked, always showing the same side to its star. "That's most of what we know at this time from TESS data alone, but we do have some other campaigns currently underway to characterize this more," Gilbert said."No results yet, but exciting things are coming."
TESS will have its eye back on TOI 700 in just over a week, Gilbert noted, with another nine months or so of data due within the coming year. And the researchers have brought in reinforcements as well. Gilbert is currently observing the system with thein Chile, using its Echelle Spectrograph for Rocky Exoplanets and Stable Spectroscopic Observations instrument, which is designed to characterize Earth-like exoplanets.
to estimate the star's ultraviolet emissions — information that could inform climate models for these planets.has already proven capable of sniffing out the components of an exoplanetary atmosphere, that skill won't be used on either TOI 700 d or e, which are each small enough that an atmospheric analysis would take far too long to be practical given the star's small size, Gilbert said. However, it might be able to study the largest planet, TOI 700 b, she added.
France Dernières Nouvelles, France Actualités
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