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ilmuwan memprediksi planet mirip Bumi
Ilmuwan planet telah menghitung bahwa ada ratusan miliar planet mirip Bumi di galaksi kita yang mungkin mendukung kehidupan , dengan menerapkan ide 200 tahun ke ribuan exo - planet yang ditemukan oleh teleskop ruang angkasa Kepler ....read more
scientists
predict Earth-like planets around most stars
Date:
February 4, 2015
Source:
Australian National
University
Summary:
Planetary scientists
have calculated that there are hundreds of billions of Earth-like planets in
our galaxy which might support life, by applying a 200 year old idea to the
thousands of exo-planets discovered by the Kepler space telescope.
............
planetary scientists
have calculated that there are hundreds of billions of Earth-like planets in
our galaxy which might support life.
The new research, led by PhD student Tim Bovaird and Associate Professor
Charley Lineweaver from The Australian National University (ANU), made the
finding by applying a 200-year-old idea to the thousands of exo-planets
discovered by the Kepler space telescope.
They found the standard star has about two planets in the so-called
Goldilocks zone, the distance from the star where liquid water, crucial for
life, can exist.
"The ingredients for life are plentiful, and we now know that
habitable environments are plentiful," said Associate Professor
Lineweaver, from the ANU Research School of Astronomy and Astrophysics and the
Research School of Earth Sciences.
"However, the universe is not teeming with aliens with human-like
intelligence that can build radio telescopes and space ships. Otherwise we
would have seen or heard from them.
"It could be that there is some other bottleneck for the emergence of
life that we haven't worked out yet. Or intelligent civilisations evolve, but
then self-destruct."
The Kepler space telescope is biased towards seeing planets very close to
their stars, that are too hot for liquid water, but the team extrapolated from
Kepler's results using the theory that was used to predict the existence of
Uranus.
"We used the Titius-Bode relation and Kepler data to predict the
positions of planets that Kepler is unable to see," Associate Professor
Lineweaver said.
Story Source:
The above story is based on materials provided by Australian National University.Note: Materials may be edited for
content and length.
Journal Reference:
1. Timothy Bovaird, Charles H. Lineweaver,
Steffen K. Jacobsen. Using the Inclinations of Kepler Systems to
Prioritize New Titius-Bode-Based Exoplanet Predictions. Monthly
Notices of the Royal Astronomical Society, 2015 [link]