2 astronauts in spacesuits holding a US flag on the moon.

Planting a flag on the moon

With virtually no atmosphere on the moon – and, therefore, no wind – flags that fly freely on Earth would hang like limp cloth in the lunar environment. So Apollo 11 engineers had to rethink flagpole design entirely.

Video: Moon hoax not

Don’t believe the moon landings were real? Go ahead. Watch this.

5 moon-landing innovations that changed life on Earth

The technologies behind weather forecasting, GPS and even smartphones can trace their origins to the race to the moon.

Join space scientists marking Apollo anniversary

Join online as leading space scientists discuss the legacy of Apollo 11 during the mission’s 50th anniversary this week.

The eclipse that marked the start of the Iroquois Confederacy

The total solar eclipse of August 22, 1142, may have coincided with the birth of the Iroquois Confederacy, oldest democracy in North America and possibly on Earth.

What’s a Blood Moon?

In some circles of Christian prophecy, a Blood Moon is a member of a special kind of lunar tetrad : four total lunar eclipses in a row, each separated by six lunar months. By this definition, the last Blood Moon occurred on September 28, 2015.

Gray spacecraft over barren orange hills and plain with a yellow sky.

Dragonfly aims for Saturn’s moon Titan

Scheduled for launch in 2026, the Dragonfly mission will look for clues to the origins of life, and possibly even evidence of life itself, on Saturn’s alien yet remarkably Earth-like moon Titan.

What’s the July birthstone?

Happy birthday to all you July babies! Your birthstone, the ruby, is among the most highly prized of gemstones.

Today in science: 1st Telstar launch

Telstar was the 1st satellite to relay television signals between Europe and North America. It launched on this date … and helped change the world.  

Map showing July 6, 2019 earthquake epicenter. It is north of a line - about equidistant - from Los Angeles and Las Vegas, Nevada.

California shakes from 2nd big quake in 2 days

An earthquake scientist said of the recent 2 big California earthquakes, “… the M6.4 was a foreshock. This was a M7.1 on the same fault … part of the same sequence.” She added it will not trigger another large earthquake outside the Ridgecrest, California, area.