When massive stars die at the end of their short lives, they light up the cosmos with bright, explosive bursts of light and material known as supernovae. A supernova event is incredibly energetic and intensely luminous -- so much so that it forms what looks like an especially bright new star that slowly fades away over time.
For 10 years, NASA's Fermi Gamma-ray Space Telescope has scanned the sky for gamma-ray bursts (GRBs), the universe's most luminous explosions. A new catalog of the highest-energy blasts provides scientists with fresh insights into how they work.
New research by a University of Guelph physicist suggests most of Earth's heavy metals were spewed from a largely overlooked kind of star explosion called a collapsar.
Nestled within this field of bright foreground stars lies ESO 495-21, a tiny galaxy with a big heart. ESO 495-21 may be just 3000 light-years across, but that is not stopping the galaxy from furiously forming huge numbers of stars. It may also host a supermassive black hole; this is unusual for a galaxy of its size, and may provide intriguing hints as to how galaxies form and evolve.
A survey of 300 stars in search of exoplanets finds that massive, Jupiter-like gas giants are found just about where Jupiter is in our own solar system. Most such massive planets occur around stars weighing 1.5 solar masses, with few around sun-like stars. Though the Gemini Planet Imager Exoplanet Survey found just six planets and three brown dwarfs around these 300 stars, the survey provides much-needed statistics on large planet masses and orbits.
The newly-discovered dark dwarf galaxy Antlia 2's collision with the Milky Way may be responsible for our galaxy's characteristic ripples in its outer disc, according to a study led by Rochester Institute of Technology Assistant Professor Sukanya Chakrabarti.
Allison Kirkpatrick of the University of Kansas will announce a breakthrough finding that overturns assumptions about the maturation of galaxies and may represent a phase of every galaxy's life cycle that was unknown until now.
A deep dive into the sun's interior provides new clues to the forces that govern that star's internal clock.
New research shows that the sun could experience a massive burst of energy called a superflare sometime in the next several thousand years.
The Solar System's second largest planet both in mass and size, Saturn is best known for its rings. These are divided by a wide band, the Cassini Division, whose formation was poorly understood until very recently. Now, researchers have shown that Mimas, one of Saturn's moons, acted as a kind of remote snowplough, pushing apart the ice particles that make up the rings.