Check out the massive cyclones at Jupiter’s north and south poles, on display in stunning new images from the Juno spacecraft.
Composite infrared image from Juno of clusters of massive cyclones surrounding Jupiter’s north pole. Image Credit: NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM
An analysis of the cosmic microwave background has provided clues about the gas inside vast cosmic voids in space, between giant superclusters of galaxies.
This is a map of the universe within 500 million light years. It shows most of the major galaxy superclusters that surround the Virgo supercluster. These superclusters are not isolated in space but together with many other smaller concentrations of galaxies they form parts of extensive walls of galaxies surrounding large voids. Three of the biggest walls near us are marked on the map as well as several of the largest voids. There are several hundred thousand large galaxies within 500 million light years, so even on this scale our galaxy is a very insignificant object. Image via Atlas of the Universe.
The 2018 equinox comes March 20 at 16:15 UTC. It’s an event that happens on our sky’s dome – and a seasonal marker in Earth’s orbit around the sun.
The day arc of the Sun, every hour, during the equinox as seen on the celestial dome, from the pole. Image via Tau?olunga at Wikimedia Commons.
On a dark night, look for it as a smudge of light, with 3 times the moon’s diameter. It’s really a wondrous cluster of stars called the Beehive, or M44.
Beehive star cluster, aka M44, by Fred Espenak at AstroPixels. Used with permission.