In a paper published in the Astrophysical Journal Letters, Harvard University astrophysicists Avi Loeb and Amir Siraj show that an equal-mass stellar companion...
A team of professional astronomers and citizen scientists from the Backyard Worlds: Planet 9 project has spotted 95 new brown dwarfs near the Sun.
An artist’s...
Astronomers using NASA’s HERSCHEL (Helium Resonance Scattering in the Corona and Heliosphere) sounding rocket have obtained global images of the helium...
The heliosphere is a giant magnetic bubble that contains our Solar System, the solar wind and the solar magnetic field. Outside the heliosphere is the...
Solar Orbiter, a space mission of international collaboration between ESA and NASA, made its first close approach to the Sun in mid-June and captured unique...
NASA’s Parker Solar Probe has captured unique images of comet C/2020 F3 (NEOWISE) and its two tails.
This image from the WISPR instrument on board NASA’s...
Comet C/2020 F3 (NEOWISE), a recently-discovered visitor from distant parts of our Solar System, is putting on a spectacular nighttime display.
This image...
A team of astronomers from Israel and the United States has discovered a vast stream of 250 stars of extragalactic origin in the vicinity of our Solar...
A team of scientists at the University of Science and Technology of China has developed an efficient and sustainable hierarchical steam generator that,...
Our Solar System contains a large population of icy bodies stretching well beyond the orbit of Neptune. These objects are remnants from the early formation...
Using five years of magnetic field data obtained by NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft, a team of scientists has created...
Repeated collisions with the Sagittarius dwarf galaxy may have triggered major star formation episodes in our Milky Way Galaxy, one of which roughly coincided...
Officially classified C/2020 F8 (SWAN) but nicknamed comet SWAN, the new comet was first spotted in April 2020 by Australian amateur astronomer Michael...
JAXA’s Hayabusa-2 spacecraft recently traveled to the near-Earth asteroid (162173) Ryugu to collect samples and return them to Earth for lab analysis....
Magnetic activity on the Sun leads to solar flares, coronal mass ejections, and other space weather that affects Earth. Similar activity on other stars...
New images from the NASA/ESA Hubble Space Telescope of the long-period comet C/2019 Y4 (ATLAS), taken on April 20 and 23, 2020, provide the sharpest views...
Using the NASA/ESA Hubble Space Telescope and several ground-based telescopes, astronomers have been able to watch the long-period comet C/2019 Y4 (ATLAS)...
In 2011, NASA’s MESSENGER orbiter detected signals typical of glacial ice near the poles on Mercury. The ice was dingy and lurked in permanent shadows...
Solar Orbiter, a new collaborative mission between ESA and NASA to study our Sun, successfully launched on an Atlas V 411 rocket from Cape Canaveral Air...
Water makes up about 0.25% (almost three times that of the Sun) of the molecules in Jupiter’s atmospheric molecules at the gas giant’s equator, according...
