Biggest, Smallest, Hottest, Coldest, Oldest and Youngest planets in the Universe – Beauty Above Us


DENIS-P J082303.1491201-b, has 28.5 times
the mass of Jupiter – making it the most massive planet listed in NASA’s exoplanet
archive. It is so massive that it is debated whether
it still is a planet (it would be a Jupiter-class gas giant) or whether it should actually be
classified as a brown dwarf star. Ironically, its host star is a confirmed brown
dwarf itself. Just slightly larger than our moon, and smaller
than Mercury, Kepler-37b is the smallest exoplanet yet discovered. A rocky world, it is closer to its host star
than Mercury is to the sun. That means the planet is too hot to support
liquid water and hence life on its surface. Kepler-37b is a sub-Earth, an exoplanet with
a radius and mass smaller than Earth. Its surface temperature is 700 Kelvin, which
is about 427 °C or 800 °F. Because of this, it is not expected to have an atmosphere. PSR B1620-26 b is the oldest known planet
in the Universe, and the first planet found in globular cluster. It is located approximately 12,400 light-years
away from Earth, in the constellation of Scorpius. It is also unofficially known as “Methuselah”,
and “the Genesis planet” due to its extreme age of about 12.7 billion years. It orbits around the two stars of PSR B1620-26,
one of which is a pulsar and the other is a white dwarf. V830 Tauri b is an exoplanet 427 light-years
away from Earth in the constellation of Taurus. The exoplanet has a young age of only about
2 million years, and orbits its parent star every 4.93 days at a distance of 0.057 Astronomical
unit from its parent star. This is about 7 times closer to the host star
than the planet Mercury is to the Sun. Its mass is about 77% that of Jupiter, and,
because it is orbiting very close to its parent star, it is classified as a hot Jupiter. OGLE-2005-BLG-290Lb is the coldest known planet
in the known Universe. It has a temperature of around -223°C, and
has mass 5.5 times the Earth. This rocky planet is not too far from its
host star which is a red dwarf. It orbits its host star at a distance similar
the distance between Sun and Jupiter. Kelt-9b planet is the hottest place you will
find in the known Universe. With a dayside temperature of 4,600 Kelvin,
which makes it hotter than M-type stars, and many K-type stars. It orbits HD195689, also known as KELT-9,
an A-type main sequence star about 620 light-years from Earth. KELT-9 is the first B-type star in which a
planet has been discovered. KELT-9b was detected using the Kilodegree
Extremely Little Telescope, and the results of its unusual nature were published in 2016.

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