White dwarfs are the dense cores left behind when stars exhaust their fuel and collapse. They are Earth-sized stellar embers weighing typically half as...
NGC 6440 is a typical massive, obscured and contaminated globular cluster formed and orbiting within the bulge of our Milky Way Galaxy.
This Webb image...
GN-z11 is an exceptionally luminous galaxy that existed when our Universe was only 420 million years old, making it one of the earliest and most distant...
The carbon atom provides the backbone for the complex organic chemistry composing the building blocks of life. The physics of the carbon nucleus in its...
Removing the hydrogen-rich layers from a main sequence star exposes the helium-rich core. Such stripped helium stars are known at high and low masses,...
Using spectropolarimetric data gathered by various telescopes around the globe, astronomers from the University of Amsterdam and elsewhere have identified...
ZTF J203349.8+322901.1, nicknamed Janus after the two-faced Roman god of transition, is a transitioning white dwarf with two faces: one side of its atmosphere...
The giant planet 8 Ursae Minoris b (also known as Halla) orbits the core-helium-burning red giant star 8 Ursae Minoris (Baekdu). At a distance of only...
The detection of the Type Ia supernova SN 2020eyj at radio wavelengths show that the exploded white dwarf had a helium-rich companion.
An artist’s rendition...
Antimatter particles such as positrons and antiprotons abound in the cosmos. Much less common are light antinuclei, composed of antiprotons and antineutrons,...
The sample of material delivered to our planet from the near-Earth asteroid Ryugu contained a mixture of extraterrestrial (helium and neon) and terrestrial...
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...
Physicists using the Superconducting Analyzer for Multi-particles from Radio Isotope Beams (SAMURAI) in Japan have experimentally observed a resonance-like...
Mass loss in red giant stars is one of the major uncertainties in the astrophysics.
Red giant stars. Image credit: NASA’s Goddard Space Flight Center...
Each year, about 2 kg of helium-3, a rare isotope of helium gas, escapes from Earth’s interior, mostly along the mid-ocean ridge system. Helium-3 is...
Astronomers using the Large Binocular Telescope have discovered two unusual hot subdwarf stars: PG 1654+322 and PG 1528+025. While normal stars have surfaces...
Jupiter, Saturn and numerous giant exoplanets discovered to date consist mostly of hydrogen and helium. In 1977, planetary scientists predicted the existence...
Detailed measurements from the Grand Finale phase of NASA’s Cassini mission revealed distinctive features of Saturn’s magnetic field. These features...
