A spectacular explosion became visible on Earth during the Middle Ages.
NASA/CXC/D. Berry; NASA/STSci/Hubble; ESA/M. Kornmesser
When stars die, some explode into supernovas and leave behind shimmering remnants — many of which we’ve observed via telescope.
It’s not easy to tell how long ago a supernova explosion began, but sometimes telescope records can illuminate the past.
Their report was published last month in The Astrophysical Journal.
ilbusca/DigitalVision Vectors/Getty Images
The remnant would first have appeared in Earth’s skies during the 14th or 15th century.
Credit: X-ray: NASA/CXC/Rutgers/J.Hughes; Optical: NASA/STScI
Researchers were able to narrow down a specific date range by comparing telescope images of SNR 0519 from the past decade.