![]() ![]() This is the signature of a ‘reflection nebula’ – this one is known as NGC 1999. This bright material in the area pictured here is only visible because of the light from the star it does not emit any visible light of its own. It contains over a thousand stars that are loosely bound by gravity, but it is visually dominated by a handful of its brightest members. The star is so young that it is still surrounded by a cloud of material left over from its formation. Commonly called the Pleiades or Seven Sisters, M45 is known as an open star cluster. It appears white owing to its high surface temperature of about 10 000✬ – nearly twice that of the Sun. The bright star seen here is V380 Orionis, a young star 3.5 times the mass of our own Sun. Reflection nebula Hubble/WFPC2 captures the void in 2000. The powerful radiation from a nearby mature star may also have helped to clear the hole. It is a reflection nebula, and shines from the light of the variable star V380 Orionis. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. ![]() In general, such globules are known to be small cocoons of forming stars, but thanks to ESA’s Herschel Space Observatory, which would have been able to see any hints of star formation at infrared wavelengths but did not, along with ground-based observations, it turned out to be a truly empty patch of sky.Īstronomers think that is was formed when jets of gas from some of the young stars in the wider region punctured the sheet of dust and gas that forms the surrounding nebula. This peculiar portrait from the NASA/ESA Hubble Space Telescope showcases NGC 1999, a reflection nebula in the constellation Orion. brings you the latest images, videos and news from Americas space agency. brings you the latest images, videos and news from America's space agency. ![]() When the dark patch was first imaged, it was assumed to be a very cold, dense cloud of gas and dust, so thick as to be totally opaque in visible light, and blocking all light behind it. Orion Nebula Messier 42 Constellation: Orion Coordinates: 05h35m17.3s (right ascension), -05☂3’28 (declination) Visual magnitude: +4.0 Absolute magnitude: -4. While the ‘fog’ is dust and gas lit up by the star, the ‘hole’ really is an empty patch of sky. The Orion Nebula was first observed by the Hubble Space Telescope in 1993, and has been a frequent target since. This spooky sight, imaged by the NASA/ESA Hubble Space Telescope, resembles fog lit by a streetlamp swirling around a curiously shaped hole – and there is some truth in that. ![]()
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