LTT 1445Ac, a terrestrial planet in the triple star system LTT 1445, is only 1.07 times the size of Earth, according to a paper to be published in the...
Two new papers in the Astronomical Journal show that in some multiplanet systems, giant planets tend to kick their smaller neighbors out of orbit and wreak...
Astronomers report the discovery and validation of two long-period giant exoplanets orbiting the K-dwarf star TOI-4600, first detected using observations...
The members of the LP 413-53AB system are so close that it takes just 17 hours to revolve around each other.
An artist’s rendering of two brown dwarfs....
An elongated dust and gas feature named X7 has a mass of about 50 Earth masses and is on an orbital path around Sagittarius A*, the supermassive black...
Kepler-1658b is a hot-Jupiter exoplanet orbiting a very massive star 2,600 light-years away.
An artist’s concept of the Kepler-1658 system. Image credit:...
Astronomers using the Dark Energy Camera (DECam) on the Víctor M. Blanco 4-m telescope at Cerro Tololo Inter-American Observatory have discovered two...
On September 26, 2022, NASA’s Double Asteroid Redirection Test (DART) intentionally slammed into Dimorphos, a moonlet of the asteroid Didymos. According...
ZTF J1813+4251 is a 51-minute-orbital-period, fully eclipsing binary system consisting of a star with a temperature comparable to that of the Sun but...
The atmosphere of Jupiter is enriched with heavy elements by a factor of about 3 compared to a protosolar composition. The origin of this enrichment and...
The discovery probability of long-period comets passing near the Sun is highest during their first passage and then declines, or fades, during subsequent...
Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based facilities, astronomers have discovered a long-period sub-Neptune...
A team of professional astronomers and citizen scientists from the Backyard Worlds: Planet 9 project has discovered a planetary-mass object co-moving with...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have identified a dense, ultra-short-period sub-Earth planet transiting the bright,...
The super-Earth HD 3167b is close to orbiting within the stellar equatorial plane, while the mini-Neptune HD 3167c orbits above the poles of the host star,...
The TOI-178 planetary system, a 7.1-billion-year-old system of six planets in the super-Earth to mini-Neptune range, five of which are locked in a rare...
