SNR G326.2-01.7 is a supernova remnant found in the Galactic Plane (the plane of the Milky Way). It is about 40 arcminutes in extent which, if we could see it in the night sky, would appear larger than the full Moon.
The supernova remnant G295.5+09.7 is estimated to be between 7,000 and 10,000 years old. The distance of this remnant is somewhere between 4,000 and 13,000 light years from Earth. It contains the pulsar PSR J1210-5226.
SN 1604 was a supernova that occurred in the Milky Way. Appearing in 1604, it is the most recent supernova in our galaxy to have been observed by the naked eye. It was originally named for Johannes Kepler, the German astronomer who described it in De Stella Nova.
SN 1006 was a supernova that is likely the brightest observed stellar event in recorded history. It is believed to have appeared between April 30 and May 1, 1006 AD in the constellation of Lupus and was seen by observers in China, Japan, Iraq, Egypt, and the continent of Europe.
Puppis A is a supernova remnant, the remains of a star that exploded somewhere between 2000 and 4000 years ago. This remnant is relatively close to the Solar system and the supernova would have appeared on Earth as a very bright star. ASKAP can see radio emission from the stellar debris, but it is also visible at other wavelengths, including X-rays.
The Crab Nebula is a supernova remnant is a Messier source (M1) and also a so-called “A” source (Taurus A) being one of the first few radio sources to be discovered in radio. It is believed to be associated with a supernova observed by Chinese astronomers in the year 1054.
The supernova remnant SNR G356.2+4.5 has almost the same angular extent as the full moon. Unlike most remnants, this one has an unusual hexagonal structure.