Unusual 'Phoenix' Exoplanet , Challenges Our Current Understanding of , Planetary Evolution.
'Newsweek' reports that astronomers have discovered a
strange exoplanet that has been able to withstand intense
radiation from a giant red star and retain its atmosphere.
According to researchers at John Hopkins University, the
rare planet should have been stripped down to the rock by
the constant bombardment of radiation from its host star.
Instead, the unusual exoplanet developed
a puffy, less-dense atmosphere instead.
Astronomers nicknamed the planet
"Phoenix" due to its ability to survive
and adapt to extreme environments. .
'Newsweek' notes that our own Sun is expected to
turn into a red giant in about five billion years, as it
enters into the final stages of a star's life cycle.
When this happens, the sun will
expand and engulf the Earth. .
Current understanding of the
future evolution of the Earth's
atmosphere suggests that when
the sun evolves into a red giant,
it will strip most, or all, of the
planet's atmosphere just before
finally engulfing the planet whole, Sam Grunblatt, Astrophysicist at
Johns Hopkins University, via 'Newsweek'.
However, the new study suggests that Earth's
atmosphere may be able to withstand this event,
adapting to the extreme environment over time. .
Earth may survive until,
and even beyond, the start of
planet engulfment, and may
also puff up in the process. , Sam Grunblatt, Astrophysicist at
Johns Hopkins University, via 'Newsweek'.
This also suggests that the timing of
other stages of Earth's atmospheric
evolution may happen later than
expected, or in a different sequence
than models currently predict,
which may have large implications for
the longevity of life on Earth and beyond, Sam Grunblatt, Astrophysicist at
Johns Hopkins University, via 'Newsweek'
