Feed aggregator

How different are these two streaks?

This floating ring is the size of a galaxy.

Results showed that in almost all cases, measured bandwidths were higher than predictions by widely used models of the galaxy, highlighting a need for updates to current ISM density models.

Researchers have made a record-breaking astrophysical discovery while simultaneously uncovering a possible explanation for the rare and extreme astrophysical event known as long-period radio transients.

Dark ovals in Jupiter's polar haze, visible only at UV wavelengths, were first noticed 25 years ago, then ignored. A new study shows that these dark UV ovals are common, appearing at the south pole in 75% of Hubble Space Telescope images taken since 2015. They appear less often at the north pole. The scientists theorize that a magnetic vortex generated in the ionosphere stirs up and concentrates the hydrocarbon haze that blankets the poles.

One of the most identifiable nebulas in the sky,

A new computer model can be used to detect and measure interior oceans on the ice covered moons of Uranus. The model works by analyzing orbital wobbles that would be visible from a passing spacecraft. The research gives engineers and scientists a slide-rule to help them design NASA's upcoming Uranus Orbiter and Probe mission.

An international team of researchers has made new observations of an unusual supernova, finding the most metal-poor stellar explosion ever observed.

Scientists have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins of which are as yet unknown.

What lies at the center of our galaxy?

In an interplanetary first, on July 19, 2013

Braided and serpentine filaments of glowing gas

New research has uncovered what may be the oldest direct evidence of ancient hot water activity on Mars, revealing the planet may have been habitable at some point in its past.

Like an illustration in a galactic

Axions are the most likely candidate for enigmatic dark matter that dominates the universe. Astrophysicists are searching for evidence of high-mass axions produced during supernovae. Scientists propose that a quick way to find these axions is to look for a gamma ray burst coincident with a neutrino burst from a nearby core collapse supernova. But we need a fleet of gamma ray telescopes to insure we capture these rare events.

While astronomers have taken about two dozen zoomed-in images of stars in our galaxy, unveiling their properties, countless other stars dwell within other galaxies, so far away that observing even one of them in detail has been extremely challenging. Up until now.

Earthset from Orion

What's happening with these clouds?

Astronomers have discovered the first pairs of white dwarf and main sequence stars -- 'dead' remnants and 'living' stars -- in young star clusters. This breakthrough offers new insights on an extreme phase of stellar evolution, and one of the biggest mysteries in astrophysics.

Stars can create huge and intricate