headless 曰く、2006 年に国際天文学連合 (IAU) が採択した惑星の定義は民間分類に基づくものだと主張する天文学者のグループが惑星物理学に基づく惑星の定義を提唱している
(論文、
The Next Web の記事)。
コペルニクス革命時に科学者が考案した地質学的特徴で分類する惑星の概念は理論に裏付けられ、科学にとって実用的なもので、主惑星と衛星の両方を含んでいたという。しかし、それから 2 世紀ほど過ぎ、太陽中心説を受け入れ始めた科学とは無縁な大衆は目的論や占星術上の想定などを含む地…
New submitter GFS666 shares a report from Live Science: We may soon be able to test one of Stephen Hawking’s most controversial theories, new research suggests. In the 1970s, Hawking proposed that dark matter, the invisible substance that makes up most…
あるAnonymous Coward 曰く、SpaceX社が展開する衛星インターネットのStarlinkのパラボラアンテナに、豪雪地帯で「猫が集まる」欠陥が見つかったというTwitter投稿がちょっと笑いを呼んでいる（Aaron Taylor氏のツイート、Futurism.com、GIGAZINE）。 記事によると、パラボラアンテナには雪が積もるのを防ぐために気温を検知して熱を発する機能があるというのだが、それに気づいた猫たちが、暖かなアンテナの上に集結してしまったという。なおこの猫たちには、暖房付…
The red planet looks good enough to eat in this Trace Gas Orbiter image of a crater. ESA/Roscosmos/CaSSISThe European Space Agency (ESA) has released a breathtaking new photo of a two-and-a-half-mile-wide ice-covered crater on Mars affection…
Spacefaring adventurers, living and experimenting with new technology, could potentially spawn a post-human eraAfter years of delay, and massive cost over-runs, the James Webb space telescope (the JWST) was launched on Christmas Day. It will need to pe…
“With the successful extension of Webb’s second sunshield mid-boom, the observatory has passed another critical deployment milestone,” NASA announced Friday, adding that the sunshield “now resembles its full, kite-shaped form in space…”
The completi…
Technology has come a long way in 2021. There’s widespread mRNA vaccines! An asteroid-deflecting space mission! A very powerful laptop with a very controversial notch! But it’s unfortunately easier to think about the cringiest moments of the year than it is to remember times when we marveled at indoor farming robots. So hop aboard the choo-choo-cheugy […]
A formal complaint to the UN under space treaties says the US is responsible.
New Zealand has historically been capital-starved, but recent investments have increased access to early-stage VC funding. Now, certain industries are emerging as areas where New Zealand can win.
Chinese citizens lashed out online against billionaire Tesla and SpaceX CEO Elon Musk on Monday after China complained that its space station was forced to take evasive action to avoid collision with satellites launched by Musk’s Starlink program. CNBC…
