Expert Voices

Physicists have discovered a new, exotic kind of tetraquark, made up of four charm quarks. They say it's a major breakthrough.

Gravity can be a real downer when you are trying to grow organs.

How would you make a hypernova?

Mathematical physicist proposed making 'black hole bombs.'

There's a reason — actually, several — why Sir Isaac Newton is often considered the No. 1 scientist of all time.

Blood clots are life-threatening, as they can cause heart attacks or strokes and lead to huge health related costs on Earth.

There are a lot of reasons that a faster spaceship is a better one, and nuclear-powered rockets are a way to do this.

Since the launch of Sputnik 1 in 1957, the lower orbit around the Earth has become an increasingly congested environment.

Atmospheric scientists sampled the most pristine air on Earth, just above the Southern Ocean. They found some surprises.

Otherwise, they'd be ferociously unstable.

The space community has work to do when it comes to inclusion.

Young people who are “hooked” on watching fantasy or reading science fiction may be on to something.

A physicist proposes that the moon is a great place to build a particle collider and conduct high-energy physics experiments.

Scientists just found the universe's missing baryon matter hiding in the cosmos.

Physicists are figuring out how close you can get to a black hole before you are unlikely to escape. That threshold is called the innermost stable circular orbit (ISCO).

Space exploration technologies have already helped benefit Earth in many ways, especially when it comes to communications, Earth observation and even fostering economic growth.

Almost as interesting as what they knew, however, is what they did not know.

Around the planet, a loosely knit but closely woven band of amateurs monitor the whereabouts of satellites — be they secretive spacecraft, rocket stages, orbital debris or lost space probes.

Magnetars — highly magnetized, rapidly rotating super-dense stars — are among the most enigmatic creatures to inhabit the cosmos and their origins are shrouded in mystery.