
Bruce Dorminey
Senior Contributor at Forbes
@Forbes senior contributor. Author Distant Wanderers: The Search for Planets Beyond the Solar System. Opinions my own.
Articles
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2 weeks ago |
forbes.com | Bruce Dorminey
In the high stakes science of looking for signatures of life on a planet circling another sunlike star, understandably, there's pressure to produce results. Thus, news that a University of Cambridge-led team in the U.K. had detected dimethyl sulfide (DMS), a sulfur-rich potential biosignature on a hydrogen-rich ocean-world some 124 light years away, was music to many astrobiologists’ ears.
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3 weeks ago |
forbes.com | Bruce Dorminey
Out of scores of books on the origins and machinations of the universe, it’s rare to find one that offers something new.
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3 weeks ago |
forbesjapan.com | Bruce Dorminey
ベテルギウスやアンタレスのような赤色超巨星(Red Super Giant、RSG)は、天の川銀河(銀河系)全体にとって、宇宙生物学的な側面を豊かにする存在だ。進化が進んだ大質量星であるRSGは、太陽に似た恒星を新たに形成するための化学物質の供給に大きな役割を果たしている。 これら短命の星の大半は、膨張して温度が下がり、最終的に重力崩壊型(II型)超新星となる。この過程で、RSGは山ほどの塵(固体微粒子)と、大量の炭素、窒素、酸素、鉄を放出する。これらはすべて、知られている形態の生命の構成要素になる。 大質量星は非常に大きいので、太陽系の中心の太陽の位置にあるとすると、その半径は木星にまで達すると考えられると、米バージニア工科大学の博士候補者(天体物理学)のサラ・ヒーリーは取材に応じた電子メールで述べている。それでも、RSGの進化を後押しする複雑なメカニズムについては、まだ解明できていないという。 恒星理論の予測では赤色超巨星はすべて重力崩壊型超新星になる可能性がある一方、高光度の赤色超巨星が引き起こす爆発現象はこれまで一度も観測されたことがないと、ヒーリーは指摘する。...
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3 weeks ago |
forbes.com | Bruce Dorminey
Preliminary budget cuts proposed by the Trump Administration would slash a huge swath out of NASA's Venus science funding. And it would spell the end of the space agency’s much anticipated $500 million DAVINCI mission, an orbiter and atmospheric probe, which had been due for launch to our sister planet in 2030. The Trump White House shared a draft version of its 2026 budget request for NASA with the space agency, as Ars Technica first revealed last week.
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1 month ago |
forbes.com | Bruce Dorminey
The oldest known naked eye star in our Milky Way Galaxy is not some flashy red supergiant on the verge of going supernova, like Betelgeuse in the constellation of Orion. Nor is it part of an ancient globular cluster in the halo of our Milky Way. Instead, Mu Cassiopeia A is a simple field star --- a yellow dwarf of the same spectral type as our own sun, but one that clocks in at an astonishing 12.7 billion years old.
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RT @bdorminey: The Trump Administration’s preliminary NASA budget cuts would obliterate years of progress on planned Venus space missions a…

RT @ExoCytherean: We have the opportunity to do incredible things as a civilization and learn invaluable lessons from our sister planet. Le…