NASA's Advanced Composite Solar Sail System (ACS3) can be seen with the naked eye as it orbits Earth, and can be tracked with ...

NASA loaded a microwave-sized device packed with a four-piece, 860-square-foot, ultra-thin solar sail aboard a rocket and ...

Now that its reflective sail has deployed fully open in orbit, the Advanced Composite Solar Sail System can be seen in the ...

According to a new study, if a primordial black hole passed within a few hundred million miles of Mars, it could shift the planet's orbit by about a meter -- causing a "wobble." ...

A giant solar sail recently unfurled by Nasa has been spotted “tumbling” through space. Astronomers captured the ...

Now, however, Pluto and that part of the solar system has moved away from the backdrop of the Milky Way into a sparser region of the night sky. With its Hyper Suprime-Cam (HSC), Subaru has discovered ...

The night sky on Tuesday will treat us to a partial lunar eclipse during a supermoon. It’s an astronomical wonder that almost ...

A small asteroid may become a "mini-moon" of Earth's for a couple of months, according to some astronomers. But what makes ...

In fact, every planet—and every moon—in the solar system will be in the sky during the eclipse. However, that doesn’t mean you’ll see them all. Contrary to what you might have read ...

For example, a home solar system with 22% efficient panels might ... Since the sun’s position in the sky is always changing, shadows constantly move. An area that seems ideal for solar panels ...

The Advanced Composite Solar Sail System, or ACS 3 ... reaching magnitude 0 (as bright as the brightest stars in the sky). It then faded again, and next displayed a slow brightness variation ...