John Casani spent more than half a century turning speculative ideas about distant worlds into working spacecraft that could survive the trip. His quiet influence at NASA’s Jet Propulsion Laboratory ...

A 10-month mission demonstrated three elements of the plan to beam solar power from space to Earth. One year ago, Caltech's Space Solar Power Demonstrator (SSPD-1) launched into space to demonstrate ...

In 2013, the United States installed more solar photovoltaic capacity than either Germany or Australia for the first time ever. (The US has tripled their combined population, so arguably this should ...

Forbes contributors publish independent expert analyses and insights. Dianne Plummer is the Lead Consultant of STEM Spark Solutions. Rooftop solar has become one of the fastest-growing clean energy ...

The location of the solar system's outer boundary is a point of contention among astronomers. There are three possible candidates, which "all have merit." But which one is best? When you purchase ...

"It all works like intricate clock gears. Throw more gears into the mix and it all breaks." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

Nick has seven years of experience in the home improvement industry. He started his career marketing for dozens of flooring providers and related home services across North America. Today, he is a ...

Here's a look at our solar system, from the scorching surface of Venus to the home of the largest volcano. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

The solar tax credit has been a boon to homeowners who want to invest in solar panels. Many of our members have told us how adding solar has allowed them to lower their electric bills or even bring ...

One year ago, Caltech’s Space Solar Power Demonstrator (SSPD-1) launched into space to demonstrate and test three technological innovations that are among those necessary to make space solar power a ...