All Spacebound

NASA’s space explorer Juno will finally sidle up to the gas giant on Saturday around 8:51 a.m. Eastern time.

Russian billionaire Yuri Milner and Stephen Hawking have proposed sending hundreds of nanobots to Proxima b, an exoplanet 4 light-years from Earth.

On Monday, NASA’s space explorer Juno is scheduled to reach its destination: Jupiter. It will be the first probe to study the giant, gaseous planet in detail. Here's how to watch the highly anticipated arrival in real-time, and other details.

In a dome on Hawaii's Mauna Loa volcano, a group of would-be astronauts is simulating living on Mars to test the psychological effects of a long-duration future mission to the Red Planet.

The lab would orbit the Red Planet with six astronauts onboard studying Mars in real-time in preparation for landing humans on its surface.

Some astronomers suggest that besides looking at planets near middle-aged stars, like our sun, we should be looking for life on thawing planets around older, red giant stars.

ExoMars, a joint program of European and Russian space agencies, was supposed to send the first European rover to Mars in 2018. Now technical problems have forced the agencies to delay that mission.

To be launched in 2018, the James Webb wil be the most powerful telescope in history, able to see back into the earliest days of the universe. 

NASA's telescope recently set itself in emergency mode, the first time it did so in its seven-year career. But it is now recovered and hunting for life outside our solar system.

Bursts of radiation from the sun can damage GPS systems and other communications technologies, so scientists are working on ways to predict when they're coming.

Compact and made of light-weight material, BEAM is an inflatable pod that could revolutionize space habitation for astronauts and space tourists.

Scott Kelly's 340-day mission represents an important step toward exploration of the Red Planet, but the challenges of such a mission remain daunting.

In this week's Nature paper, scientists calculate that Mars had the conditions for flowing water for a much longer time period than expected, which suggests that life could have had ample time to form there.

Scott Kelly is back from a 340-day mission aboard the International Space Station. How is he coping with life back on the planet's surface?

The American astronaut Scott Kelly returns to Earth from the International Space Station, from what is likely his last space mission. His trip back to Earth will be relatively quick, though not necessarily easy.

American astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko are returning to Earth after a year in space – longer than any humans since 1999. Why studying long stays in space is important for future missions. 

An international team of researchers announced Thursday that they became the first group to detect a cosmic phenomenon that Albert Einstein first predicted 100 years ago.

A new discovery could open a whole new world of physics. 

A man in India died from a meteor impact over the weekend. Though tons of space junks falls to Earth every year, the chances of serious damage are very low.

Without a concrete plan or enough money, the space program's nebulous goal to send humans to Mars may not be feasible, says the House Committee on Science, Space, and Technology.