Image of a gray dusty asteroid in space

The asteroid Eros imaged by the NEAR spacecraft • NASA/JPL/JHUAPL (Public Domain)

Artist's impression of an asteroid approaching Earth

Artist's impression of an Earth impacting asteroid• Illustration by Kevin Gill (CC BY 2.0)

Artist's impression of asteroid

Artist's impression of asteroid • NASA/JPL-Caltech (Public Domain)

Too close for comfort

Antoine de Saint-Exupéry’s Lit­tle Prince lived on a world so small he could watch a dozen sun­sets in a sin­gle evening just by mov­ing his chair west­ward around the cir­cum­fer­ence of his tiny plan­et. His plan­et had a few weeds and three vol­ca­noes, two active, one extinct; the Lit­tle Prince kept the active vol­ca­noes unvi­o­lent by peri­od­ic clean­ing with a Q‑tip sort of swab.