Eighty-five percent of the universe is composed of dark matter, but we don't know what, exactly, it is.
Almost 35 years ago, scientists made the then-radical proposal that colossal hydrogen bombs called novae go through a very long-term life cycle after erupting, fading to obscurity for hundreds of thousands of years and then building up to become full-fledged novae once more. A new study confirms that the novae we observe flashing throughout the universe represent just a few percent of these cataclysmic variables, as they are known, with the rest "hiding" in hibernation.
Model developed by Brazilian researchers shows chaotic phase that placed objects in current orbits beginning within first 100 million years after formation of giant planets.
'These outflows are crucial for the understanding of galaxies' formation,' Arav said. 'They are pushing hundreds of solar masses of material each year.
BU astrophysicist and collaborators reveal a new model of our heliosphere that's shaped somewhere in between a croissant and a beach ball.
A team of researchers have published new calculations that predict a striking and intricate substructure within black hole images from extreme gravitational light bending.
Scientists from the University of Sheffield have discovered a pulsating ancient star in a double star system, which will allow them to access important information on the history of how stars like our Sun evolve and eventually die.
Despite Mercury's 400 C daytime heat, there is ice at its caps, and now a study shows how that Vulcan scorch probably helps the planet closest to the sun make some of that ice.
An international team of researchers, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has for the first time succeeded in demonstrating the ionization cooling of muons.
An international team of astronomers in the project SPECULOOS, dedicated to the search for habitable planets, with scientists participating from the Instituto de Astrofísica de Canarias (IAC) has discovered an eclipse (termed an occultation) in a peculiar brown dwarf formed by two stars orbiting around each other. The results are just published in the journal Nature Astronomy.