On Saturday and Sunday nights, Dec. 15 and 16, Bob expects Comet Wirtanen to achieve naked-eye visibility – the first comet in years to do so.
Comet Wirtanen will soon pay Earth its closest-ever visit. It should be large and blobby-looking, appearing as a fuzzy glob the size of the full Moon.
The Martian surface air is 30 times thinner than the air atop Mount Everest. And if that weren’t bad enough, all that thin, barely-there gas is carbon dioxide: no oxygen. You can’t breathe there.
By day the antisolar point is marked by the shadow of your head. At night it’s the most happening place in the heavens.
Here are my top six sky apparitions that belong on everyone’s bucket list, most of which appear in your own backyard.
One word is so consistently mispronounced that I’ve been repeatedly corrected when I say it the right way, which is why it drives me bonkers.
You go there when you want privacy. Lagrangian points are very cool. So why haven’t we ever explored them in the 44 years this column has run?
How can such an intangible thing as the fact of awareness, such as experiencing the smell of buttered corn, arise from the insentient atoms and molecules that fashion our bodies?
Friday-Saturday, Sept. 14-15: There’s probably a supermassive black hole in the core of every galaxy. Ours has the weight of four million Suns.
Summer offers a profusion of ice-crystal phenomena.