A "hot Saturn" passes in front of its host star in this illustration. Astronomers who study stars used "starquakes" characterize the star, which provided critical information about the planet.
Artist's concept of TESS against background of stars & orbiting planets in the Milky Way . Credit: ESA, M. Kornmesser (ESO), Aaron E. Lepsch (ADNET Systems Inc.), Britt Griswold (Maslow Media Group), NASA's Goddard Space Flight Center & Cornell University
This image shows an artist's impression of Barnard's star b, a cold Super-Earth discovered orbiting Barnard's star 6 light-years away.
This artist's illustration shows recently discovered exoplanet K2-288Bb, 226 light-years away and half the size of Neptune. It orbits the fainter member of a pair of cool M-type stars every 31.3 days.
This is an artist's impression of the exoplanet HAT-P-11b. The planet has an extended helium atmosphere that is blown away by the star, an orange dwarf is smaller but more active than our sun.
An artist's illustration of what the super-Earth found around the orange-hued star HD 26965 (also known as 40 Eridani A) might look like. The recently discovered exoplanet is compared to the fictional planet of Vulcan because Star Trek creator Gene Roddenberry said the star was the ideal candidate to host Vulcan, Mr. Spock's home world.
For the first time, eight planets have been found orbiting another star, with our solar system for the most known planets around a single star. The Kepler-90 system is in the constellation Draco, more than 2,500 light-years from Earth.
This artist's illustration shows exoplanet Ross 128 b, with its red dwarf host star in the background. The planet is only 11 light-years from our solar system. It is now second-closest temperate planet to be detected after Proxima b.
Welcome to the KELT-9 system. The host is a hot, rapidly rotating A-type star that is about 2.5 hours more massive and almost twice as hot as our sun. The hot star blasts its nearby planet KELT-9b with massive amounts of radiation, leading to a daylight temperature of 7800 degrees Fahrenheit, hotter that most stars and only 2000 degrees cooler than the sun.
This artist's concept shows OGLE-2016-BLG-1195Lb, a planet orbiting an incredibly faint star 13,000 light-years away from us. It is an "iceball" planet with temperatures reaching minus 400 degrees Fahrenheit.
LHS 1140b is located in the liquid water habitable zone surrounding its host star, a small, faint red star named LHS 1140. The planet weighs about 6.6 times the mass of Earth and is shown passing in front of LHS 1140. Depicted in blue is the atmosphere the planet may have retained.
Artist's conception of the binary system with three giant planets discovered, where one star hosts two planets and the other hosts the third. The system represents the smallest-separation binary in which both stars have been observed.
This artist's impression shows the planet Proxima orbiting the red dwarf star Proxima Centauri, the closest star to our solar system.
This artist's impression shows the surface of the planet Proxima b.
An artist's rendering shows Earth-sized exoplanets TRAPPIST-1b and 1c in a rare double transit event as they pass in front of their ultracool red dwarf star, which allows Hubble to take care of their atmospheres.
Out of a new discovery of 104 exoplanets, astronomers found four similar in size to Earth that are orbiting a dwarf star. Two of them have the potential to support life. The craft depicted in this illustration is the NASA Kepler Space Telescope, which has helped confirm the existence of thousands of exoplanets.
This artist's impression shows a triple-star system HD 131399 from close to the giant planet orbiting in the system. Located about 320 light-years from Earth, the planet is about 16 million years old, making it also one of the youngest exoplanets discovered to date.
HD-106906b is a gaseous planet 11 hours more massive than Jupiter. The planet is believed to have formed in the center of its solar system, before being sent out to the edges of the region by a violent gravitational event.
Kepler-10b orbits at a distance more than 20 times closer to its star than Mercury is to our own sun. Daytime temperatures exceed 1,300 degrees Celsius (2,500 degrees Fahrenheit), which is hotter than lava flows on Earth.
This Jupiter-like planet in the HD-188753 system, 149 light-years from Earth, has three suns. The main star is similar to our own Sun. The system has been compared to Luke Skywalker's home planet Tatooine in "Star Wars."
Astronomers discovered two planets less than three times the size of Earth orbiting sun-like stars in a crowded stellar cluster approximately 3,000 light-years from Earth in the constellation Cygnus. ] Weird and wonderful planets beyond our solar system
This artist's conception shows a hypothetical planet with two moons orbiting in the habitable zone of a red dwarf star. The majority of the sun's closest stellar neighbors are red dwarfs.
The Kepler-444 system formed when the Milky Way was just 2 billion years old. The tightly packed system is home to five planets that range in size, the smallest is comparable to the size of Mercury and the largest to Venus, orbiting their sun in less than 10 days.
This artistic concept image compares Earth, left, with Kepler-452b, which is about 60% larger. Both planet's orbit a G2 type star of about the same temperature; however, the star hosting Kepler-452b is 6 billion years old – 1.5 billion years older than our sun.