![]() What is an exoplanet? And how do we know they're out there? exploreĮxoplanets are far away and hard to see. How do gravitational waves give us a new way to learn about the universe? explore Learn more about these exploding stars! explore How Many Solar Systems Are in Our Galaxy?Īstronomers have discovered 2,500 so far, but there are likely to be many more! explore exploreĪ nebula is a cloud of dust and gas in space. Learn about how we use light-years to measure the distance of objects in space. Most galaxies formed more than 10 billion years ago! Learn about how we find the age of galaxies using light.Ī light-year is the distance light travels in one Earth year. ![]() The Moon transits the Sun during an eclipse, but did you know that other objects can transit, too? Learn more in this article. exploreĪ transit is when one object in space crosses in front of another object in space. It all depends on what the spacecraft will do! Read on to learn more. Eek! exploreĪirplanes and satellites can experience changes in time! Read on to find out more. exploreĬheck out these nine unearthly nightmares that could be happening right now in our own galaxy. Learn more about what these groups of stars can (and can’t) tell us about our place in the universe. doĬolor Your Universe: Find the Hidden ObjectsĬan you find all the NASA and space-themed hidden objects? play exploreīecome a NASA Space Place Explorer with these printable activity books. The James Webb Space Telescope is the largest, most powerful space telescope ever built.
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