Expert Voices

This year's first supermoon will potentially grace the sky on February 9.

Did plants and trees survive when the dinosaurs were wiped out?

Pearl Jam's new record, 'Gigaton,' moves listeners beyond Earthly bounds to reflect on our changing planet.

Machines could fulfill desires and support humans during space travel.

As far as cosmologists can tell, the mysterious force behind the accelerated expansion of the universe, a force that we call dark energy, remains constant. But it may not have done so in the past.

All four outer planets in our solar system sport at least a few rings, but so far, we haven't observed any such features around exoplanets. That's confusing.

String theory is a purported theory of everything that physicists hope will one day explain … everything.

A dark web ties the universe together. Now, we can see it.

But also super-mysterious.

Life for the 19th-century astronomer was kind of monotonous, 200 years after Galileo's revolutionary work with the telescope.

These supremely stable particles could explain dark matter.

Sometimes the forming star swallows up a huge amount of matter, resulting in a burst of activities in the massive star.

It was a big moment for our cosmos when the first stars awoke, but it's an elusive one for scientists.

As with any major human exploration, there will be a number of obstacles to overcome when we send people to Mars.

The world of the teensy-tiny, the quantum realm, could have a favorite flavor. Here's why that's a big deal.

Alien life is out there, but our current theories seem to be steering us away from it, says this scientist.

Alien lifeforms are impossible to spot.

String theory is a powerful idea, unfinished and untested, but one that has persisted for decades despite inauspicious beginnings.