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Astro Bob

October 15, 2017
NASA’s Terra (left) and Aqua Earth-observation satellites captured these views of the fires in California on Oct. 9 two hours apart. Strong winds from the dry deserts to the northeast blow large clouds of fire smoke out over the Pacific. (Joshua Stevens, using MODIS data from LANCE/EOSDIS Rapid Response)
California wildfires visible from outer space
October 15, 2017 - 6:00am
October 1, 2017
This artist’s impression shows the binary asteroid 288P, located in the main asteroid belt between the planets Mars and Jupiter. The object is unique as it is a binary asteroid which also behaves like a comet.
ASTROBOB: Comet or asteroid? Hubble discovers unique solar system object
October 1, 2017 - 9:30am
August 19, 2017
The simulation of the moon’s shadow as it crosses the continent starts off the west coast of Oregon and tracks all the way to the Atlantic. Fly along with the eclipse shadow on Monday at button
Fly along with the eclipse shadow in this groovy new video
August 19, 2017 - 3:45pm
August 13, 2017
A student looks at the partially eclipsed sun in northern England on March 20, 2015 using a pair of eclipse glasses. Credit: Reuters
AstroBob: How dark will it get during total eclipse?
August 13, 2017 - 8:30am
August 6, 2017
Earth has several different layers: crust, mantle and core. If you were to somehow safely descend into the core, you’d be weightless there because all the matter around you would tug on you equally. As you ascended back to the surface, you’d gradually return to your normal weight. Credit: NASA
AstroBob: If you dug a deep enough hole, would end up in China?
August 6, 2017 - 1:29pm
April 16, 2017
This artist’s concept depicts the early Martian environment (right) — believed to contain liquid water and a thicker atmosphere — versus the cold, dry environment seen at Mars today (left). NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) has been orbiting the Red Planet for more than two years, studying its upper atmosphere, ionosphere and interactions with the sun and solar wind. NASA’s Goddard Space Flight Center
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Astro Bob: How Mars turned nasty cold
April 16, 2017 - 9:21am