Ellipses are defined as curves that surround two focal points. At any point on the ellipse, the sum of the distance to both ...

Life could have the time and energy to arise and prosper on Earth-like worlds in the rapidly shrinking "Goldilocks zones" ...

Giant Exoplanets in HR 8799 System Likely Formed Like Jupiter and Saturn The first exoplanet was discovered in the 1990s, but ...

Four small, newly discovered worlds are less than six light-years away from Earth, and their discovery reinforces a ...

Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

Giant planets can take shape in two ways: by slowly building solid cores that attract gas, like our solar system, or by rapidly collapsing from a young star's cooling disk into massive objects.

So exactly how many solar system moons have we found ... which are typically larger and have small, circular orbits close to the equator of their host planet; and irregular moons, which can ...

Most solar companies set the price according to the solar system's wattage. A solar installation's “cost per watt” is a little like the “price per square foot” when you buy a house.

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 ...

Earth's atmosphere is shrinking due to climate change and one of the possible negative impacts is that space junk will stay in orbit for longer, bonk into other bits of space junk, and make so much ...

providing fresh insight into planetary evolution beyond our solar system. A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation ...