Barium, a chemical element with the symbol Ba and atomic number 56, is the heaviest element detected to date in any exoplanetary atmosphere.
This artist’s...
The triple star system LTT 1445, at a distance of 22.5 light-years, hosts some of the nearest rocky planets.
This Chandra image shows the LTT 1445 system:...
Methylated gases are made when organisms add a carbon and three hydrogen atoms to an undesirable chemical element. Called methylation, this process can...
Nitrous oxide (also known as laughing gas) — a product of microbial nitrogen metabolism — is a compelling exoplanet biosignature gas with distinctive...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a Jovian planet orbiting the M4-type dwarf TOI-5205. Their paper...
LkCa 15, also known as IRAS 04363+2215, EPIC 247520207 or TIC 118681038, is a K5-type star with a mass of 1.2 solar masses.
An artist’s illustration...
Exoplanets smaller than Neptune are common around red dwarf (M-dwarf) stars, and many of those that transit their host stars constitute the bulk of known...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite and the SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) telescopes...
Using the NASA/ESA/CSA James Webb Space Telescope, astronomers have captured a direct image of HIP 65426b, an extrasolar gas giant about 6 to 12 times...
Carbon dioxide is a key chemical species that is found in a wide range of planetary atmospheres.
This transmission spectrum of WASP-39b was captured by...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) and the SPIRou spectropolarimeter on the 3.6-m Canada-France-Hawaii telescope have...
The International Astronomical Union (IAU) has announced a contest to name extrasolar planetary systems to be observed by the NASA/ESA/CSA James Webb Space...
With an effective temperature of 8,500 K, the A-type star HD 56414 is one of the hottest stars known to host a planet smaller than Jupiter.
An artist’s...
Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have detected the emission from 13CO — measure of the molecular gas distribution...
The NASA/ESA/CSA James Webb Space Telescope has captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding...
University of Toronto astronomer Evelyn Macdonald and her colleagues have identified substantial differences in surface temperature, sea ice and water...
The NASA/ESA/CSA James Webb Space Telescope mission today released its first full-color scientific images and spectroscopic data.
An artist’s impression...
Pulsar planets are extrasolar worlds that are found orbiting pulsars, or rapidly rotating neutron stars. In new research, Iuliana Camelia Nitu, a Ph.D....
An international team of astronomers, using the radial velocity (RV) method, has discovered a third planet in the planetary system HD 33142.
An artist’s...
Astronomers using the Gemini Planet Imager instrument at the Gemini South telescope in Chile have imaged a sample of 44 bright Herbig Ae/Be and T-Tauri...
