Supernova remnants mark the graveyards of dead stars; some passing from the Main Sequence into obscurity in the blink of an eye (a mere 50 million years).
[X-ray (NASA/CXC/ESO/F. Vogt et al.); Optical (ESO/VLT/MUSE & NASA/STScI)]
Work together with your three closest neighbors, for one minute.
Sort the last five times (age of Universe, life of a bright star, great dinosaur extinction,
light from quasar to us, Sun around Milky Way) from shortest to longest.
How could a telescope be used to determine each of these timescales?