Long Range Sensors Detect…

  • Mars Lost Atmosphere to Space
  • Rosetta Sees Changing Face of Comet
  • Observing the planets Mars, Jupiter, Saturn this week

NASA’s MAVEN mission has confirmed that the solar wind stripped the Red Planet of its atmosphere.  http://www.skyandtelescope.com/astronomy-news/mars-lost-atmosphere-to-space-3003201723/Based on the ratio of various elements’ isotopes planetary scientists suspect that the Red Planet has lost anywhere from 25% to 90% of its atmosphere over the last 4-ish billion years, with the estimates favoring at least 50%. READ THE ARTICLE

Researchers have used data from the Rosetta mission to link outbursts on Comet 67P/Churyumov-Gerasimenko with dramatic surface changes.  Changes seen on the comet’s surface provide researchers with the before and after “smoking gun” of seeing the possible triggering mechanism for a cometary outburst in action. READ THE ARTICLE

 

Jupiter (magnitude –2.5, in Virgo) comes to opposition on April 7th. It rises around sunset, shines low in the east-southeast after nightfall, high in the southeast by 11 p.m., and highest due south around 1 a.m. daylight saving time. Spica hangs 7° below it. In a telescope Jupiter is 44 arcseconds across its equator.

Mars and Mercury in the twilight.

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Saturn over Sagittarius at dawn, early April 2017

Saturn (magnitude +0.4, in Sagittarius upper right of the Teapot) rises in the early morning hours and glows in the south by early dawn. Redder Antares (magnitude +1.0) twinkles 19° to Saturn’s right. Saturn doesn’t reach opposition until June 14th.

The blue 10° scale is about the width of your fist at arm’s length.

Fanzine to share!

From the National Fantasy Fan Federation which claims to be “The oldest international Science Fiction and Fantasy fan club on planet Earth.”  Could be–the club started in April of 1941!

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