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“Binary black holes are basically like giant targets hanging out in a globular star cluster, and as you throw other black holes or stars at them, they undergo these crazy chaotic encounters.”

Take a virtual tour of the moon in all-new 4K resolution – Ultra High Def – created from data provided by NASA’s Lunar Reconnaissance Orbiter spacecraft.

Astronomers were surprised to discover an enormous “cold front” millions of light years in extent and older than the solar system.

Scientists have noticed that Jupiter’s Great Red Spot has been getting smaller over time. New evidence says the storm is getting taller – and more orange – as it shrinks.

The Hubble Space Telescope looks at a very rare and odd assemblage of stars that has remained essentially unchanged for the past 10 billion years.

Worried that our human species is making a mess of things? Inspiration-less? Carl Sagan wants to tell you something.

If your browser or smart phone is set up to view it, this 360 video will let you virtually explore a Mars simulation facility at NASA’s Jet Propulsion Laboratory, where engineers are practicing for an upcoming Mars lander mission.

Boats moving through water make bow waves. Objects in space, including Earth, make them, too. Even the moon’s shadow – penetrating Earth’s atmosphere during a total solar eclipse – creates moving bow waves.