Earth-size exoplanet TRAPPIST-1h probably too cold for life
Astronomers have stuck the TRAPENSE-1h path, the outermost planet in the system, finding that the world has just less than 19 Earth days to complete a revolution around its small star host.
The new finding suggests that TRAPENSE-1h is too cold to maintain life as we know it, and we confirm that the seven Trappist-1 worlds around their stars in a kind of gravitational locking between each other, said members of the ‘ study. [Exoplanet tour fulfills 7 terrestrial planets TRAPENSE-1]
“It is very exciting that we learn more about this planetary system elsewhere, especially on planet h, which we had almost no information so far,” said Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directory at the organization’s headquarters In Washington DC, it said in a statement.
“This discovery is an excellent example of how the scientific community relieves the power of our data complementary missions to make such fascinating discoveries,” added M. Zurbuchen.
The discovery of emotional scientific terrestrial planets
TRAPENSE-1 is a small, dwarf star, only 8 percent more massive than the Sun is about 40 light years from Earth. In May 2016, astronomers using the TRAPENSE instrument (Transit planets and planetesimals small telescope) in Chile have announced the discovery of three terrestrial planets more or less in the system. The figure rose to seven with additional observations by NASA’s Spitzer Space Telescope Spitzer and other ground-based telescopes.
Three of the seven worlds seem to orbit the TRAPENSE-1 ” habitable zone ”, which means they could harbor liquid water, and therefore life as we know it, on their surfaces.
Despite this work, astronomers have not been able to define the TRAPENSE-1h route. But they realized that the other six planets in the system are in “orbital resonance.” That is to say, the worlds have seized stable orbits whose periods are linked together by a relation of two small integers.
Similarly, the moons of Jupiter Io, Europa and Ganymede are in orbital resonance: for each turn, Ganymedes completes around Jupiter, Europe makes two and four Io complete orbit. TRAPENSE-1 resonances are much more complex, but follow the same principle.
Relationships between the six planets of the research team to offer six possible resonant orbits TRAPENSE-1h. Several observations have ruled out five of the six, but the sixth was confirmed by observations made by NASA’s Kepler space telescope in December 2016 for March this year, scientists announced in the new study, published Monday in the journal Nature astronomy.
“The resonance structure is not a coincidence, and it points out an interesting dynamic history in which the planets probably have migrated inward blocking,” said lead author Rodrigo Luger, a Ph.D. student at the University of Washington in Seattle, In the same statement. “This makes the system an excellent test bench for planetary theories and immigration.”
TRAPENSE-1 contains the record for most of the planets found in orbital resonance. Second is a tie between the exoplanetary systems Kepler-80 and Kepler-223, everyone knows how to accommodate four resonant worlds.
TRAPENSE-1h receives approximately the same amount of energy from its star as the dwarf planet Ceres, the largest object in the asteroid belt between Mars and Jupiter is from the Sun to Earth, according to NASA officials. So TRAPENSE-1h is probably a fragile world unable to adapt to a life similar to Earth, they added.