Those theories got a jolt 10 years ago, when astronomers first began discovering
planets outside our solar system orbiting other stars.
Not exact matches
The discovery of seven Earth - sized
planets orbiting a single cool star fuels a debate over what counts as good news in the search for life
outside the
solar system.
Many
planets outside the
solar system are even more massive than Jupiter, and they
orbit their Sun - like stars at an Earth - like distance, but these faraway super-Jupiters are effectively giant gas balls that can not support life because they lack solid surfaces.
Dawn is the first mission to visit a dwarf
planet, and the first mission
outside the Earth - moon
system to
orbit two distinct
solar system targets.
Fascinating new light could be shed on the complex atmospheres of
planets which
orbit stars
outside our own
solar system, thanks to pioneering new research.
Researchers expect to find water on many
planets outside the
solar system, called exoplanets, including Jupiter - size gas giants such as HD 189733 b and HD 209458 b, which
orbits a different star.
Planets orbiting stars
outside the
Solar System are now known to be very common.
The first
planets outside the
solar system were discovered 25 years ago — not around a normal star like our Sun, but instead
orbiting a tiny, super-dense «neutron star».
The Wide - Field Infrared Survey Telescope, or WFIRST, is a proposed mission to study, in part,
planets orbiting stars
outside the
solar system.
In the past two decades more than 1,800 extrasolar
planets (or exoplanets) have been discovered
outside our
solar system orbiting around other stars.
You have been studying exoplanets —
planets outside the
solar system that
orbit Sun - like stars — almost since they were first discovered.
The Kepler 11
system is unique for several reasons: For starters, it is among the largest collections of worlds known
outside our own
solar system, and all six of the
planets Kepler has found there are aligned so that their
orbits carry them across the face of their host star from Kepler's vantage point.
Astronomers have identified more than 100
planets orbiting stars
outside our
solar system, primarily by monitoring the way a
planet's gravity tugs its star back and forth.
Leslie Sage, an authority on exoplanets (
planets outside our
Solar System), was perplexed when he learned about hot Jupiters — Jupiter - size
planets orbiting so close to their stars that they complete an
orbit every few days.
The
planet, dubbed WASP - 18b, has a mass about 10 times that of Jupiter and completes one
orbit around its star WASP - 18 in less than 23 hours, which places the
planet in the «hot Jupiter» category of exoplanets, or
planets that are located
outside our
solar system.
The
orbit of an Earth - like
planet (with liquid water) around this star would be centered around 1.14 AU — somewhat
outside the orbital distance of Earth in the
Solar System — with an orbital period of about one and a quarter of an Earth year.
Five new
planets have been discovered
outside our
solar system, all
orbiting a sun - like star located within the constellation Aquarius, nearly 620 light years...
A
planet orbiting a star
outside of our
solar system.
We know that there are at least 75
planets outside our own
solar system,
orbiting their distant stars.
In 1995, University of Geneva astronomers Michel Mayor and Didier Queloz announced the discovery of the first
planet outside our
solar system, a Jupiterlike giant
orbiting around a «main sequence» star similar to our sun, 51 Pegasi [source: Mayor and Queloz].
Marcy studies
planets orbiting stars
outside our own
solar system, or exoplanets.
exoplanet A
planet that
orbits a star
outside the
solar system.
Extrasolar
planet, also called exoplanet, any planetary body that is
outside the
solar system and that usually
orbits a star other than the Sun.
If you include infrared radiation, the
orbit of an Earth - like
planet with surface water would be centered beyond 0.4 AU —
outside the orbital distance of Mercury in the
Solar System.
Currently, the
orbit of an Earth - like
planet (with liquid water) around Pollux may be centered around 5.7 AU — just
outside the orbital distance of Jupiter in the
Solar System.
An exoplanet is a
planet which
orbits a star
outside our
solar system.
This chart compares artists» concepts of the smallest known exoplanets (
planets orbiting outside the
solar system) as of January 2012 to our own
planets Mars and Earth.