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.
How and when to see the constellation Aries in the night sky, plus info about this constellation in the history of astronomy and in mythology.
Three bright planets appear at nightfall in December 2016: Mercury, Venus and Mars. Jupiter reigns as the sole morning planet. Saturn is lost in the sun’s glare.
Skywatcher, by Predrag Agatonovic.
Due to shifting weather patterns, the northeastern coast of the United Sates could see more frequent and more powerful hurricanes in the future, says new research.
Hurricane Sandy 2012 via NASA
Year’s shortest day comes at winter solstice. But, for Northern Hemisphere, earliest sunsets happen around early December. Southern Hemisphere? Your earliest sunrises are around now.
Adrian Strand captured this photo on a beach in northwest England.
Earth without its moon would be a very different world indeed. No eclipses. Smaller tides. But the biggest change would be in the length of Earth’s day.
Image via NASA.gov
NOAA’s outlook for this winter predicts a warmer, drier South, and cooler, wetter North. Drought is expected to persist in California and expand in the Southeast.
Image via NOAA
A camera on board ESA’s ExoMars mission has returned its first images from orbit. It was meant to be a test, but the images are spectacular.
A mile-wide (1.4 km) crater on the rim of a larger crater near Mars' equator, as seen from CaSSIS. Image via University of Bern.
These strange galaxies have 1,000 times fewer stars than the Milky Way, yet occupy a large space. Astronomers used an advanced computer simulation to show that supernova explosions helped create them.
Comparison of an ultra-diffuse galaxy with the nearby Andromeda galaxy, an ordinary spiral galaxy and our Milky Way's nearest large neighbor.