Arctic Ice Formation is More Complex Than Previously Thought
New observations show that Arctic sea ice isn't completely static; it undergoes back and forth motions twice a day, no…
Another Gathering of Planets
Four planets are gathering in the night time sky, and the view is spectacular. On the evening of April 22,…
Arecibo Gets an Upgrade
The giant Arecibo radio observatory in Puerto Rico - already the largest and most sensitive single dish in the world…
Saturn in Four Wavelengths
The latest image of Saturn released from NASA's Cassini spacecraft shows the Ringed Planet in four wavelengths: ultraviolet, visible blue,…
Book Review: Einstein’s Cosmos
We do live. We age. We move. Time is how we refer to the transfer of ourselves from our beginning…
Wallpaper: Galaxy with a Ring of Star Formation
To celebrate the 14th anniversary of its launch, the operators of the Hubble Space Telescope have released this image of…
Not Getting the Newsletter?
In theory, I send out Universe Today every weekday (Mon-Fri) some time during the day. I do occasionally miss a…
Are Jupiter’s Spots Disappearing?
Jupiter's stormy surface could be settling down, according to calculations by UC Berkeley physicist Philip Marcus. According to Marcus, Jupiter's…
Satellites Show How the Earth is Warming Up
NASA satellites have been used to create an 18-year record of temperatures on the Earth's surface, and not surprisingly, they're…
Gravity Probe B Launches
A special NASA spacecraft designed to test two aspects of Einstein's General Theory of Relativity, Gravity Probe B, lifted off…