There's a supermassive black hole - 4 million times our sun's mass - in the center of our Milky Way galaxy. Astronomers who've measured star movements near this central black hole are now saying there might be a 2nd companion black hole near it.

Ideas discussed at last month’s International Astronomical Union symposium in Tokyo include projects using smartphones and low-cost battery-powered equipment.

Friday - December 13 - comes exactly 13 weeks after the year's first Friday the 13th in September. Zoinks! By the way, a fear of Friday the 13th is called friggatriskaidekaphobia.

The burning rainforest releases black carbon into the atmosphere, which, according to a growing number of scientific studies, directly contributes to the melting of glaciers.

Above: Angela Demetriou McClain of Botetourt County, Virginia, wrote: “Full Cold Moon, taken at 12:12 a.m. from my front yard...

New species from 5 continents and 3 oceans include geckos, goblin spiders, flowering plants, and Mediterranean ants.

How did the so-called tiger stripes - huge parallel cracks - form in the icy surface of Saturn's moon Enceladus? A new study from the Carnegie Institution for Science provides some answers.

At least one type of microbe on Earth not only likes to eat meteorites but actually prefers them as a food source, according to a new international scientific study.

White Island is one of several volcanoes in New Zealand that can produce sudden explosive eruptions at any time. An Earth scientist explains why.

On December 10 and 11, 2019, look in the sunset direction - close to the sunset point on the horizon, not long after the sun goes down - for the the conjunction of 2 bright planets, Venus and Saturn. Some will also spot Jupiter nearby.