Audience: 3rd grade and older  This slide shows how dramatically different the planets in our solar system are in size.

Three astronomers in NASA Goddard's Exoplanets and Stellar Astrophysics Laboratory discuss how Hubble's coronagraph and resulting images have helped scientists find planets orbiting distant stars.

Astronomers detect lowest-mass planet around a star like the sun found using direct imaging techniques.

This artists concept contrasts our familiar Earth with the exceptionally strange planet known as 55 Cancri e.

This artist's concept illustrates the hottest planet yet observed in the Universe. The scorching ball of gas, a "hot Jupiter" called HD 149026b, is about 3 times hotter than the surface of Venus.

Large gas-giant planets like Jupiter may be more rare in the galaxy than small, rocky worlds like Earth.

This slide provides the answers to common questions about black holes.

This is an artist's concept of a hypothetical 10-million-year-old star system. The bright blur at the center is a star much like our sun. The other orb in the image is a gas-giant planet like Jupit...

This artist's concept shows what the weather might look like on cool star-like bodies known as brown dwarfs. These giant balls of gas start life like stars, but lack the mass to sustain nuclear fus...

Scientists using NASA’s Hubble Space Telescope have found evidence that a planet orbiting a distant star that may have lost its atmosphere but gained a second one through volcanic activity.

The conception illustration depicts how solar pressure can be used to balance NASA's Kepler spacecraft, keeping the telescope stable enough to continue monitoring distant stars in search of transit...

The first exoplanet discovered around a sun-like star, 51 Pegasi b made us question what we knew of our universe and launched the search for new worlds.

The Kepler mission found 1,284 new planets via the transit method. When a planet passes directly between its star and an observer, it dims the star's light by a measurable amount.

This animation shows the first-ever map of the surface of an exoplanet, or a planet beyond our solar system.

This plot shows data obtained from NASA's Spitzer Space Telescope and the Optical Gravitational Lensing Experiment, or OGLE, telescope located in Chile, during a "microlensing" event. Microlensing ...

On this episode of Q&Alien, we talk about what the term "habitable zone" means - and what it doesn't.

NASA's Kepler mission has discovered a world where two suns set over the horizon instead of just one.

This artist's animation shows a celestial body about the size of our moon slamming at great speed into a body the size of Mercury.

There are 4,696 planet candidates now known with the release of the seventh Kepler planet candidate catalog - an increase of 521 since the release of the previous catalog in Jan. 2015.

Astronomers can take pictures of exoplanets by removing the overwhelming glare of the stars they orbit.

This image from NASA's Kepler mission shows the telescope's full field of view -- an expansive star-rich patch of sky in the constellations Cygnus and Lyra.

This artist's concept shows the searing-hot gas planet WASP-12b (orange orb) and its star.

Animation of Kepler spacecraft slowly rotating in space.

Audience: 3rd grade and older This slide introduces four major space telescopes that are contributing to our study of exoplanets: Hubble, Kepler/K2, Tess, and James Webb.

The first Earth-size planet discovered around a near solar twin, the discovery of Kepler-452b brings us closer than ever to finding an Earth-like planet.