Small asteroid paid a heavy price for almost striking Earth Thursday

Earth's gravity bent the trajectory of asteroid C0PPEV1 - also known as 2019 UN13 - as it swept only 3,852 miles (6,200 km) above Africa. As a result, its farthest point from the sun has now shifted out to the asteroid belt between Jupiter and Mars.

How unique is Earth?

Scientists studying white dwarf stars have found that some contain traces of rocky debris very similar in composition to rocks found on Earth. The finding suggests that worlds similar to Earth might be common in our Milky Way galaxy.

Why don’t evergreen trees change color and drop their leaves?

As temperatures drop, broad-leafed deciduous trees – think maples and oaks – withdraw the green chlorophyll from their leaves. Their leaves turn colors and fall. Evergreens solve the problem of winter in a different way.

Is daylight time worth the trouble?

This is the weekend we "fall back" here in the U.S. Are you glad? Sad? Mad? Advocates say daylight time saves energy and wins wars. Studies show injuries and illnesses rise when clocks change.

Mist over an Antarctic research station

A photo of mist above an Antarctic research station. Sunlight returned to this part of the world in August, after 4 months of continuous night. Now the station is getting ready for an influx of summer visitors.

Moon, Saturn, Jupiter in early November

At nightfall and early evening - November 1 and 2, 2019 - the waxing crescent moon shines in the vicinity of the planet Saturn, and the dazzling planet Jupiter sits below the moon and Saturn, fairly close to the horizon.

Night vision specialists: cats, bats, and owls

Three spooky Halloween animals see better at night than we do. Here’s how they do it.

How to find a wormhole … if they exist

A team of physicists proposes that perturbations in the orbits of stars near supermassive black holes could be used to detect wormholes ... if they exist.

Hubble brings you a spooky cosmic face

This ghostly face, captured by the Hubble Space Telescope on June 19, is actually a collision of 2 galaxies of about equal size, 704 million light-years from Earth.

Jupiter at sunset

Jim AndRobin Moore in Nitro, West Virginia, captured Jupiter as the sun was setting on Monday.