Astronomers release a black hole family portrait

“Black hole family portrait” is a fancy way of saying “new catalog.” But it’s a very important and exciting catalog, released October 28, 2020 by gravitational wave astronomers, containing 39 new signals from black hole or neutron star collisions.

All you need to know: Taurid meteors

Although a modest shower, perhaps offering 5 meteors per hour, the Taurid shower lasts over a month and is known for producing dramatic fireballs, or exceptionally bright meteors.

Mirach is guide star to 3 galaxies

Mirach, a bright star in the constellation Andromeda, is often used by stargazers to locate the Andromeda Galaxy, the Triangulum Galaxy, and a galaxy known as Mirach’s Ghost (NGC 404).

November 2020 guide to the bright planets

See all 5 bright solar system planets in November 2020! See 3 bright planets at nightfall: Mars, Jupiter and Saturn. Then see 2 bright planets in the morning sky: Venus and Mercury.

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Electric! Astronomers find sprites in Jupiter’s atmosphere

Scientists with NASA’s Juno mission say they have detected sprites or elves – electrical phenomena above thunderstorms on Earth – in the clouds of Jupiter for the first time. Unlike the red-colored earthly ones however, the Jovian ones are blue.

Halloween is a cross-quarter day

The 4 cross-quarter days fall between equinoxes and solstices. Halloween is the spookiest one – derived from a sacred festival of ancient Celts and Druids – coming as days grow short and nights long in the Northern Hemisphere.

Here are 3 amazing feats of spiders

Halloween time is spider time. Three amazing spider skills you might not have known about.

How does fog form?

Fog forms when the air cools and water vapor condenses.

Paul Bogard on why we need darkness

Light at night may be a sign of life on Earth, but the darkness will proclaim our true intelligence. Check out this video on why we need darkness, from Paul Bogard.

Halloween ghost of the summer sun

At mid-northern latitudes, the star Arcturus sets about 2 hours after sunset around Halloween. It sets at the same point on the horizon as the summer sun. It’s a Halloween ghost of the summer sun and an echo of long summer afternoons.

What’s a Blue Moon, and when is the next one?

We have a Blue Moon coming up on October 31, 2020. It’ll be called a Blue Moon because it’ll be the 2nd of 2 full moons in a single calendar month. And it’ll be near a bright red object in the sky, Mars!

The magnetic fields of a jellyfish galaxy

New work reveals the intricate relationship between so-called jellyfish galaxies, and the magnetic environment through which they move.

Lighting a path to find Planet Nine

The search for Planet Nine – a hypothesized 9th planet in our solar system – may come down to pinpointing the faintest orbital trails in an incredibly dark corner of space.