For 32 years, scientists have tracked the oxygen-depleted waters that appear each summer in the Gulf of Mexico. This year’s dead zone is the biggest yet.
An old 1985 photograph of freshwater from the Mississippi River flowing into the Gulf of Mexico. Image Credit: NASA.
New short video from NASA about the hunt for potentially hazardous asteroids and comets, and ways to defend Earth against them.
Can’t travel to the path of totality for the August 21, 2017 total solar eclipse? Never fear. Here’s how to watch online from a variety of sources.
Artist's concept of a total solar eclipse, via WBNG.
The August 21 total eclipse will last several hours. There will be many interesting things to look for. Bookmark this handy checklist of must-see events and effects, from eclipse gurus Fred Espenak and Mark Littmann.
During a total solar eclipse, the daytime sky darkens, and bright stars and planets pop into view. Charts here, identifying which ones for the August 21, 2017 eclipse.
Positions of the 4 visible planets during totality in the August 21, 2017 eclipse. Illustration by Eddie Irizarry using Stellarium.
Looking for road maps showing the path of totality for the August 21, 2017 eclipse? Click here.
Image via GreatAmericanEclipse.com
The American Astronomical Society wants to help you publicize your event for the August 21, 2017 total solar eclipse.
eclipse event map
A total solar eclipse of August 22, 1142 may have coincided with the birth of the Iroquois Confederacy, oldest democracy in North America and possibly on Earth.
Original Iroquois League was known as the Five Nations
Even as the long-lived Cassini spacecraft gears up for its last moments at Saturn, it’s preparing for a final long-distance look at Titan, Saturn’s large moon, on September 11.
Two views of Titan from Cassini, using the narrow-angle camera on March 21, 2017, revealing bright methane clouds in the thick, opaque nitrogen atmosphere, and dark dunes, lakes and seas on the surface. Natural color on left, false color on right. Image via NASA/JPL-Caltech/Space Science Institute/AmericaSpace.