What is a lunar eclipse? What is a solar eclipse? These babies are like full moons or new moons on steroids—so, here’s what you need to know. Consider eclipses as super-charged new moons and full ...

Emily Rhode is a science writer, communicator, and educator with over 20 years of experience working with students, scientists, and government experts to help make science more accessible and engaging ...

Why it matters: Most of us have seen the Sun thousands upon thousands of times throughout our lives, but only from a distance. True, high-definition images of our life-giving star are in short supply, ...

Definition: Solar power is energy harnessed from the sun’s rays. It is a renewable energy source, meaning it is a cleaner, more sustainable alternative to burning fossil fuels. Solar power produces no ...

It's not a question scientists ask in polite company. “It's like religion and politics,” said Kirby Runyon, a planetary scientist at Johns Hopkins University. “People get worked up over it. I've ...

The original definition of planet is wanderer, from the Greeks who watched these bright lights wander through the firmament of fixed stars. Observers discerned nine of these travelers over the course ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. UPDATED 8:45 a.m. ET Friday Aug. 18 A 12-person committee representing the world's largest group ...