Solar panels can save money on electric bills, but a solar panel system requires a steep upfront investment — $30,000 for the average system including installation ...

But given that lunar spacecraft are solar-powered, how do they survive when they're cut off from the sun? For NASA's Lunar Reconnaissance Orbiter (LRO), which has been orbiting the moon since 2009 ...

"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

Our solar system passed through a vast wave of gas and dust around 14 million years ago, dimming Earth’s view of the night sky. The wave may even have left traces in our planet’s geological ...

But the average solar panel system of 3.5kWp will cost around £7,000 to install, according to estimates from the Energy Saving Trust. The exact cost will vary, depending on the size of your home and ...

Light gases like helium hung around in the gas-and-dust nebula that formed the solar system for only a few million years. "It's very much debated how long it took the Earth to form," Olson said.

NEW YORK — Seven planets grace the sky at the end of February in what’s known as a planetary parade, though some will be difficult to spot with the naked eye. These planetary hangouts happen when ...

The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of our solar system. But while it has been accepted as a theory for over 70 years ...

Alpha Centauri, the nearest star system to the sun, is probably shedding comets and asteroids into our solar system — and even producing a few meteors in our sky. Located just 4.3 light-years ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered? Faint signatures detected by the ...