UCLA astronomers confirm that stars are responsible for producing dust on a galactic scale, a finding that’s consistent with long-standing theories.
In the galaxy II Zw 40, dust (shown in yellow) is strongly associated with clusters of stars (shown in orange). UCLA researchers have used new observations of this galaxy to confirm that these stars are creating enormous amounts of dust. Image via UCLA.
Gravity waves traveling upwards from the lower atmosphere caused this unusual banded structure in airglow above China in late November.
Photo Copyright Xiao Shuai. Photo processing by Jeff Dai. Used with permission.
The Spiderweb Galaxy – which spans some 3 times the diameter of our Milky Way – is forming inside a cluster of protogalaxies, in a dense soup of molecular gas.
Artist's conception of the Spiderweb. In this image, the protogalaxies are shown in white and pink, and the blue indicates the location of the carbon monoxide gas in which the protogalaxies are immersed. Image via ESO/ M. Kornmesser/ NRAO.
The moon passed Venus Friday evening, but there’s more to come. Wonderful photos here! Thanks to all who submitted. Keep watching this post for more photos.
Like most life on Earth, our gut microbes have their own circadian rhythm. Disrupting that daily routine can be bad – and keeping it in balance can be good – for whole body.
Micro changes have macro results. Image via Darryl Leja, National Human Genome Research Institute, National Institutes of Health
Exploding “heat bombs” might explain why the sun’s upper atmosphere, or corona, sizzles at millions of degrees – hundreds of times hotter than at the surface.
Image via NASA
Asteroid 2015 TC25 is small enough to be straddled by a person, reminiscent of the iconic bomb-riding scene in the movie Dr. Strangelove. It swept between us and the moon a year ago.
Earth’s hottest periods occurred before humans existed. Those ancient climates would have been like nothing our species has ever seen.
Artist's impression of Hadean Earth. Image via The Hadean Era
Hamal, also known as Alpha Arietis, is the brightest star in Aries the Ram. Learn the role this star played in defining the term First Point in Aries.
These are star trails, and one of the brightest trails here is Alpha Arietis, or Hamal. To learn which one, click here
, then click on the image you find. This neat image is by Herb Raab on Flickr.