Astronomers using with the Australian National University 1.3-m SkyMapper telescope have detected an extended dark matter halo around Tucana II, an ultrafaint...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite and the High Resolution Echelle Spectrometer on the Keck I telescope at the W. M. Keck...
For most of their existence, stars are fuelled by the fusion of hydrogen into helium. Fusion proceeds via two processes that are well understood theoretically:...
Most stars in the central 1,000 light-years of the Milky Way’s hub formed when it was swollen with infalling gas more than 10 billion years ago, according...
Astronomers using the High-Resolution Echelle Spectrometer (HIRES) on the Keck I telescope at W. M. Keck Observatory and the Canada-France-Hawaii Telescope...
Astronomers have discovered an ultra-short-period Neptune-sized exoplanet orbiting the bright Sun-like star LTT 9779.
An artist’s impression of the ultrahot...
A young starburst galaxy named BOSS-EUVLG1 is by far the most luminous, almost un-obscured star-forming galaxy known at any redshift.
An artist’s impression...
The Phoenix stellar stream, a thin over-density of stars in the halo of our Milky Way Galaxy originally identified by the Dark Energy Survey, is composed...
Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS), a team of professional astronomers and citizen scientists has discovered a star...
Using high-resolution spectroscopic observations from the High-Resolution Echelle Spectrometer (HIRES) on the 10-m Keck I telescope at the W. M. Keck Observatory,...
In a study published recently in the Astrophysical Journal Letters, a team of astronomers analyzed spectroscopic atmospheric data from 19 exoplanets, ranging...
There isn’t a strong correlation between gas giant and host star compositions when it comes to elements heavier than hydrogen and helium, according to...
An international team of astronomers has discovered a massive cloud of gas that formed just 850 million years after the Big Bang. The chemical composition...
Astronomers have announced the discovery of the most massive star ever known to be destroyed by a supernova explosion. Dubbed SN 2016iet, the explosive...
An energetic head-on collision between a large planetary embryo and the proto-Jupiter about 4.5 billion years ago could explain puzzling gravitational...
SMSS J160540.18-144323.1, an ultra-metal-poor red giant star located in the halo of the Milky Way, on the other side of the Galaxy about 35,000 light-years...
WASP-121b is about two times bigger than Jupiter and 1.2 times more massive. Discovered in 2016, the planet is located 881 light-years away in the constellation...
A team of astronomers using the Gemini-South telescope has discovered one of the oldest stellar clusters in the Milky Way. The team’s results date the...
