SN 1987A became the first supernova visible to the unaided eye since Kepler’s supernova was seen in 1604. All of this makes SN 1987A an incredibly rare astrophysical event that has had immense ...
Before that, the last supernova visible to the naked eye was in 1604. Using infrared wavelength and gas data gathered by the telescope, a team of researchers from around the world concluded that a ...
Johannes Kepler observed the last supernova in the Milky Way in 1604, so in a statistical sense, the next one is overdue. At 600 light years away, the red supergiant Betelgeuse in the ...