A rocky planet that circles a small star nearly 40 light-years from Earth is hot and has little or no atmosphere, a new study suggests. The finding raises questions about the possibility of atmospheres on the other orbs in the planetary system.
At the center of the system is the red dwarf star dubbed TRAPPIST-1; it hosts seven known planets with masses ranging from 0.3 to 1.4 times Earth's , a few of which could hold liquid water ( SN: 2/22/17; 3/19/18 ).
'Dark exoplanets': Planets made of dark matter might be orbiting stars
A new pre-print study suggests that "dark exoplanets" could exist - and if they do, we could spot them.
Many scientists believe that dark matter - matter that we cannot see - is everywhere in the universe, and helps explain how galaxies hold together.
Ordinary matter (or 'baryonic' matter) isn't enough to account for gravity, so scientists believe there must be something else out there.
Nasa's James Webb telescope finds Earth-like planet but there's a twist
Faraway Earth-sized planet appears to have no atmosphere; NASA images shows what surface might ...
This image provided by NASA/JPL-Caltech shows an artist's conception of what the surface of the exoplanet TRAPPIST-1f may look like, based on available data about its diameter, mass and distances from the host star.
The Webb Space Telescope has found no evidence of an atmosphere at one of the seven rocky, Earth-sized planets orbiting a nearby star.
Nasa's Webb telescope finds no atmosphere in Earth-sized planet in solar system thought to have ...
The study also marks the first detection of any form of light emitted by an exoplanet as small, and as cool as, the rocky planets in our own solar system.
"These observations really take advantage of Webb's mid-infrared capability. No previous telescopes have had the sensitivity to measure such dim mid-infrared light," study co-author Thomas Greene said.
James Webb Space Telescope confirms giant planet atmospheres vary widely
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JWST finds the planet TRAPPIST-1b may not have an atmosphere
The James Webb Telescope (JWST) has searched one of the well-known TRAPPIST-1 exoplanets for an atmosphere, and it didn't find anything.
The TRAPPIST-1 system consists of a red dwarf star with at least seven planets orbiting it, four of which orbit in the habitable zone – the area around a star where temperatures allow for liquid water.
Despite light detection, James Webb telescope finds no atmosphere on planet
March 27 (UPI) -- Scientists observing the universe through NASA's James Webb telescope said they made a breakthrough in the detection of light from a so-called exoplanet but were disappointed the Earth-like entity has no evidence of an atmosphere.
Since early 2017, scientists have been looking at seven rocky planets orbiting a dwarf star some 40 light years from our own planet. Looking at just one of those -- Trappist-1 b -- an international team was able to find infrared light emanating from the entity.
Planets Beyond Our Solar System: What Do Exoplanets Look Like?
By European Space Agency (ESA) March 27, 2023 Artist impression of an exoplanet system. Credit: ESA
Transiting exoplanets are detected as they pass in front of – transit – their host star, causing a dip in the starlight as seen from the observer's viewpoint. The transit repeats, with the time interval depending on the time it takes the exoplanet to orbit its star.
NASA's most powerful telescope just gave us the best look yet at Earth-Sized alien planet in TRAPPIST-1 star system https://t.co/8u7EZQ5btD MAstronomers (from Milky Way) Tue Mar 28 15:37:05 +0000 2023
TRAPPIST-1 b: We give it a one (M-dwarf) star review; it lacks atmosphere. ⭐ Webb found the dayside temperature of… https://t.co/saQMNcScVt NASAWebb (from Lagrange Point 2) Mon Mar 27 15:09:27 +0000 2023
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