搜索结果: 1-15 共查到“天体生物学”相关记录21条 . 查询时间(1.077 秒)
Current state-of-the-art instrumentation being sent to Mars to collect and analyze evidence of ancient life on the red planet may not be sensitive enough to make accurate assessments, according to an ...
The ongoing search for signs of life on Mars relies in part on terrestrial analogs – places on Earth closely resembling the past or current geology and climate of the red planet that can be readily ex...
科研人员揭示从小分子生成多环芳香烃（PAHs）的形成机理（图）
小分子 多环芳香烃 形成机理
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2023/1/13
星际复杂有机分子，尤其是生命相关分子（如糖和氨基酸），可能最终被运送到早期地球，从而逐渐演化为生命（图1）。因此，对星际复杂有机分子形成机理的研究，是解开宇宙生命起源之谜的核心课题。近年来，随着国内外射电天文望远镜灵敏度的大幅提高，星际空间中越来越多的复杂有机分子被探测到，包括多环芳香烃（PAHs）。然而，观测到的PAHs在星际空间中如何起源，长久以来都没有定论。
探索火星环境演化和生命信号一直是火星探测的重要科学目标。“天问一号”首次火星探测任务迈出了我国行星探测征程的第一步，未来我国还将实施“天问三号”火星采样返回任务。火星生命探测研究中“探哪里”、“探什么”、“如何探”是当前天体生物学研究的重大课题和挑战。“探哪里”主要指火星生命探测和采样返回任务的着陆区和采样区的确定；“探什么”主要是目标生命信号的遴选；“如何探”则涉及生命信号准确探测和解译所需的分...
临近空间天体生物学研究取得进展（图）
临近空间 天体生物学 地外宜居环境
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2022/9/21
探索地外宜居环境和生命信号是天体生物学研究的核心科学问题，也是深空探测的重要科学目标。地球上的一些极端环境是公认的开展天体生物学研究的理想实验区域。海平面之上20~100公里高度的地球临近空间具有高辐射、低气压、低温、干燥等极端环境条件，可在一定程度上类比现代火星的表面环境。探究生命在临近空间的生存和适应机制不仅可以更好地认识地球生命的生存极限，而且有助于理解地外生命可能的生存策略、生命星际传输、...
林巍/刘佳等-NA&SB：临近空间天体生物学研究取得系列进展（图）
临近空间 天体生物学 林巍/刘佳等-NA&SB
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2023/1/16
探索地外宜居环境和生命信号是天体生物学研究的核心科学问题，也是深空探测的重要科学目标。地球上的一些极端环境是公认开展天体生物学研究的理想实验区域。海平面之上20~100公里高度的地球临近空间具有高辐射、低气压、低温、干燥等极端环境条件，可以在一定程度上类比现代火星的表面环境。探究生命在临近空间的生存和适应机制不仅可以更好地认识地球生命的生存极限，而且有助于理解地外生命可能的生存策略、生命星际传输、...
Could acid-neutralizing life-forms make habitable pockets in Venus’ clouds?（图）
酸中和 金星云 生命形式
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2023/6/8
It’s hard to imagine a more inhospitable world than our closest planetary neighbor. With an atmosphere thick with carbon dioxide, and a surface hot enough to melt lead, Venus is a scorched and suffoca...
May 14, 2007，World-renowned astrophysicist Professor Chandra Wickramasinghe has joined the University of Glamorgan as Visiting Professor to the University’s Centre for Astronomy and Science Education ...
American Association for the Advancement of Science’s Connie Bertka: Astrobiology Could Aid a Science-Theology Dialogue
Astrobiology
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2007/5/10
9 May 2007，The recent discovery of the first potential Earth-like planet outside of our solar system has generated intense interest among space scientists, but for Connie Bertka, the discovery has int...
Black Holes Spit Out Seeds of Life
Black Holes Life warm gas
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2007/4/25
Apr 24, 2007，Black holes are often portrayed as the ultimate destroyers, but warm gas escaping the clutches of black holes could be one source of chemical elements important for life.
What Lies Beneath（图）
liquid water Mars
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2007/3/22
Mar 19, 2007，There's a lot of ice beneath the surface of Mars, and some believe there could be liquid water as well. NASA and European Space Agency spacecraft are now using ground-penetrating radar to...
Shaking Martian Salt（图）
Martian minerals water
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2007/3/22
Mar 17, 2007，Some bright Martian soil containing lots of sulfur and a trace of water intrigues researchers who are studying information provided by NASA's Spirit rover.
Seeing into a Cache of Martian Water
Martian Water Mars
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2007/3/22
Mar 18, 2007，Based on new data, scientists have estimated that the amount of water trapped in frozen layers over Mars' south polar region is enough to cover the entire planet in a liquid layer about 1...
New Evidence of Water on Mars（图）
Water Mars
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2007/3/7
March 2, 2007，NASA has released new detailed images that provide further evidence that water once flowed beneath the martian surface. Photos taken by Mars Reconnaissance Orbiter of Candor Chasma, one ...
February 28, 2007，NASA-funded researchers are refining a tool that could not only check for the faintest traces of life's molecular building blocks on Mars, but could also determine whether they have ...