Find black holes while you’re on the bus

"With a large enough sample from your classifications, we can pick out black holes at different stages and build a better picture of their origins." - Radio Galaxy Zoo

Largest-ever true-color photo of the night sky

The photographer trekked 60,000 miles (100,000 km) across the western United States and South Africa to create this massive composite image.

Video: Touch down of China’s moon mission

The lander is named for the moon goddess of Chinese mythology. Its successful landing on Saturday made China the third nation ever to land on the moon.

Researchers create a kidney using stem cells

The team designed a protocol that prompts stem cells to form all the required cell types to "self-organize" into a mini-kidney in a dish.

Long-lasting greenhouse gas breaks all the records

A newly identified greenhouse gas shatters all other records for the chemical’s potential to contribute to climate change.

Rare snow storm hits Middle East

A rare snow storm hit the Middle East, producing record snows and extreme conditions for Syrian refugees.

It’s time for Audubon’s Christmas Bird Count

The National Audubon Society’s 114th Christmas Bird Count starts this weekend. It runs until January 5. Info on how to participate here.

1.34-million-year-old remains of strong, tree-climbing human ancestor

Researchers found a partial skeleton including arm, hand, leg and foot fragments. They say that P. boisei may have been as tall as 4.5 feet tall, with a robust frame.

How to see Comet Lovejoy in December 2013

Around mid-December, Comet Lovejoy is near the famous Keystone asterism in the constellation Hercules. Photos and charts here.

Arctic caught a break in 2013, as long-term warming continues

"The relatively cool year [in 2013] does little to offset the long-term trend of the last 30 years: the Arctic is warming rapidly, becoming greener and experiencing a variety of changes." - David M. Kennedy