23
Kepler’s Supernova with all three of NASA’s Great Observatories
•Just
400 years ago:
(Oct. 9,
1604)
•Then
a bright, naked eye object
(no telescopes)
•It’s
still blowing up – now 14 light years wide and expanding at 4 million mph.
•There’s
material there at MANY
temperatures, so many
wavelengths are needed
to understand it.
