The rapid neutron capture process, or the so-called r-process, occurs in neutron-rich environments such as neutron star mergers or certain types of supernovae....
The oldest of these stars is 1.5 billion years old while the youngest is only 100 million years old, according to a paper published in the Astrophysical...
Ancient starburst galaxies that formed 2-3 billion years after the Big Bang are unusually hot and contain unexpected elements, like nickel, according to...
The NASA/ESA/CSA James Webb Space Telescope has captured a striking new photo of the barred irregular galaxy NGC 6822.
This image shows the irregular galaxy...
Aside from the Moon, the brightest object in our night sky is planet Venus, whose thick cloud layer reflects around 75% of the Sun’s light. By comparison,...
Early Universe’s stars had up to several hundred solar masses. The earliest stars of 140-260 solar masses became pair-instability supernovae (PISNe)....
Astronomers using ESO’s Very Large Telescope (VLT) have detected three distant gas clouds whose chemical composition matches what they expect from the...
Atmospheric ozone and oxygen protect the biosphere of our planet against harmful ultraviolet radiation. In new research, astronomers modeled atmospheres...
In unveiling the nature of the first stars, the main astronomical clue is the elemental compositions of the second generation of stars, observed as extremely...
The newly-discovered galaxy, SPT0418-SE, and its much larger companion, SPT0418-47, reside in a massive dark-matter halo with yet-to-be-discovered neighbors,...
Using new images from the NASA/ESA/CSA James Webb Space Telescope as well as archival data from the NASA/ESA Hubble Space Telescope, astronomers have studied...
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...
The NASA/ESA Hubble Space Telescope has taken a very detailed image of the bulge globular cluster NGC 6638.
This Hubble image shows the bulge metal-rich...
WISE 1810055-1010023 (WISE 1810 for short), a metal-poor brown dwarf located 8.9 parsecs (29 light-years) away, is nearly 10 billion years old.
Images...
Astronomers have discovered a new ultra-faint dwarf galaxy in the constellation of Pegasus and characterized it using deep imaging with the Gemini Multi-Object...
While the massive atmosphere of Jupiter consists mainly of hydrogen and helium, the key to understanding the gas giant’s formation and evolution lies...
Our Milky Way Galaxy hosts an inner ring-like structure that is rich in metals (elements heavier than hydrogen and helium) and intermediately aged, according...
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...
Named C-19, the newly-discovered stellar stream is the remnant of an ancient globular cluster and contains stars with extremely low metallicity, with a...
Using ultraviolet data from the NASA/ESA Hubble Space Telescope, astronomers have detected carbon ions — charged particles that interact with magnetic...
