Expert Voices

A recent search for oddball supersymmetric particles, which could explain some of the weirdness of the universe, came up empty-handed.

Here's how we know the distant Oort Cloud exists.

In the new book "Space 2.0," Rod Pyle gives an inside look at what's coming next for space exploration, resource extraction and settlement.

Why did the hominin cross the plain? We may never know.

The world is still celebrating the historic landing on China's Chang'e-4 on the far side of the moon on January 3.

The private space race is about to take another great leap as Israel sends a private lander to the moon.

There are some universal certainties. Death. Taxes. The second law of thermodynamics.

Is super asymmetry a thing? And do big physicists really travel economy class?

Mad scientists through the ages have dreamed of holding the world hostage by threatening to destroy the whole thing. Here's how that could work.

The IAU's achievements during its first few decades include resolving contradictory sets of names given to features on the Moon and Mars by rival astronomers during the previous few centuries.

Our senses are stuck in the past. There's a flash of lightning, and then seconds pass until we hear the rumble of distant thunder. We hear the past.

China just became the first country to land a probe on the far side of the moon. It's a technological achievement and another sign of China's capabilities and ambitions in space.

Brown dwarfs are cooler than stars but hotter than planets, and despite the name, they're not even very brown.

In the cosmos' most energetic events, we find some truly out-this-world methods of manufacturing radiation.

For the precocious hunter of off-Earth life, the Drake equation is the ever-ready, go-to toolkit for estimating just how (not) lonely humans are in the Milky Way galaxy. But it's not useful.

On Dec. 24, 1968, Bill Anders orbited the moon as lunar module pilot with the Apollo 8 crew on humanity's first voyage to another world.

George H.W. Bush's presidency came at a key turning point in NASA's history and ultimately contributed to the success of the International Space Station, NASA leadership and today's space policy.