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Distance Notes Supernova: SN 1000+0216: z=3.8993 [1] Type Ia supernova: SN UDS10Wil z=1.914 [2] Type Ia supernova: SN SCP-0401 z=1.71 First observed in 2004, it was not until 2013 that it could be identified as a Type-Ia SN. [3] [4] Type Ia supernova: SN 1997ff: z=1.7 Its distance was determined in 2001. [5] [6] [7] Type Ia supernova: Supernova ...
The Crab Nebula is a pulsar wind nebula associated with the 1054 supernova.It is located about 6,500 light-years from the Earth. [1]A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth (roughly less than 10 to 300 parsecs [30 to 1000 light-years] away [2]) to have noticeable effects on Earth's biosphere.
Because the SN 2011fe event was detected so early, astronomers can gain a more accurate measurement of its initial composition and of its evolution during the supernova explosion, and so refine their models of Type Ia supernova events, resulting in more precise distance estimates for other Type Ia supernova observations. 1
A near-Earth supernova is a supernova close enough to the Earth to have noticeable effects on its biosphere. Depending upon the type and energy of the supernova, it could be as far as 3,000 light-years away. In 1996 it was theorised that traces of past supernovae might be detectable on Earth in the form of metal isotope signatures in rock strata.
In contrast, the Lunar distance (LD or ), or Earth–Moon characteristic distance, is a unit of measure in astronomy. More technically, it is the semi-major axis of the geocentric lunar orbit . The lunar distance is on average approximately 385,000 km (239,000 mi), or 1.28 light-seconds ; this is roughly 30 times Earth's diameter or 9.5 times ...
A light-year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). The image, somewhat fuzzy, was obtained using the European Southern Observatory's Chile-based Very Large ...
The last supernova that was unambiguously closer to Earth than SN 2014J was SN 2004dj, a type II-P supernova in the galaxy NGC 2403, 8 million light-years from Earth. SN 1993J was a type IIb supernova at almost the same distance as SN 2014J, because it was located in Messier 81 , which together with Messier 82 and NGC 3077 forms the core of the ...
Citizen scientists spotted an object zipping through the Milky Way at more than 1 million miles an ... in 2013 to monitor near-Earth asteroids and ... from the supernova explosion as well ...