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September 18, 2017 - Stellar Shrapnel

Stellar Shrapnel  Hubble has unveiled a small section of the expanding remains of a massive star that exploded 8,000 years ago. The Veil Nebula’s delicate, draped filamentary structure makes it one of the best-known supernova remnants. The entire nebula is 110 light-years across, as large as six full Moons as seen from Earth, and resides 2,100 light-years away in the constellation Cygnus. This view is just a tiny fraction of the nebula’s vast structure, unveiling wisps of gas which are all that remain of what was once a star twenty times the Sun’s mass. The fast-moving blast wave from the ancient explosion is plowing into a wall of cool, denser interstellar gas, emitting light. The nebula lies along the edge of a large bubble of low-density gas that was blown into space by the dying star prior to its self-detonation.

Image credit: NASA / ESA / Hubble Heritage Team (STScI/AURA)

Weekly Calendar

September 18-24, 2017

Holidays - Sky Events - Space History

 

Moon phase Monday 18

Regulus 0.09° S of Moon
Mars 0.1° S of Moon
Mercury 0.03° N of Moon

1964: Saturn SA-7 launched
1977: Voyager 1 takes photo of Earth and Moon together in space
2006: Anousheh Ansari becomes first woman space tourist
2013: Cygnus 1 supply ship launched to ISS

Moon phase Tuesday 19

Venus 0.5° north of Regulus

Moon phase Wednesday 20

Rosh Hashanah begins at sunset

New Moon 1:30 AM ET

1945: Wernher von Braun arrives in United States
1966: Surveyor 2 launched
1970: Luna 16 lands on Moon
1979: HEAO-3 launched
1988: Israel launches its first satellite

Moon phase Thursday 21

1866: H. G. Wells born
1874
: Gustav Holst born
1974: Mariner 10 flies by Mercury for second time
2003: Galileo mission ends

Moon phase Friday 22

Jupiter 4° south of Moon
Equinox 4:02 PM ET

1990: Pioneer 10 reaches 50 AU from Sun
2006: Hinode spacecraft launched
2014: MAVEN spacecraft enters orbit around Mars

Moon phase Saturday 23

1783: Caroline Herschel discovers NGC 253
1846: J. G. Galle discovers Neptune
1962: “The Jetsons” premieres
1977: Third glide test of space shuttle Enterprise

Moon phase Sunday 24

1930: John Young born
1962: MOOSE astronaut rescue system proposed
1970: Luna 16 returns lunar soil samples
1999: IKONOS-1 launched
2014: Mars Orbiter Mission enters orbit around Mars

Suggestions for new history dates or better links? Corrections for errors on this page? Please e-mail me.