With recent observations confirming exoplanets orbiting white dwarfs, there is growing interest in exploring and quantifying the habitability of temperate rocky planets around white dwarfs. In this work, the limits of the habitable zone of an Earth-like planet around a white dwarf are computed based ...
Hank Campbell
planets as well as elaborate the preliminary requirements of contamination for manned missions on surface For these activities its is necessary to have a better understanding of microbial activity to create culture collection and to develop on-line detection tools Within this paper we present more ...
Kasting JF, Kopparapu R, Ramirez RM, Harman CE (2014) Remote life-detection criteria, habitable zone boundaries, and the frequency of earth-like planets around M and late K stars. Proc Natl Acad Sci USA 111:12641–12646 ArticleCASPubMedGoogle Scholar Keller R, Goli K, Porter W, Alrabaa...
Photosynthetic life requires sufficient photosynthetically active radiation (PAR) to metabolise. On Earth, plant behaviour, physiology and metabolism are sculpted around the night-day cycle by an endogenous biological circadian clock. The evolution of li
These potential present-day habitats are centimetres to metres below the surface and could be the most easily accessible locations to find extant life on Mars via future robotic and human missions. Methods Downward solar spectrum The Planetary Spectrum Generator75 was used to simulate the downward ...
Two newly discovered alien planets might be water worlds whose global oceans are teeming with life, scientists say. The existence of the distant exoplanets, called Kepler-62e and Kepler-62f, was unveiled during a NASA press conference today (April 18). The two worlds are perhaps the most prom...
Astronomer Dimitar Sasselov and his colleagues search for Earth-like planets that may, someday, help us answer centuries-old questions about the origin and existence of biological life elsewhere (and on Earth). Preliminary results show that they have found 706 "candidates" -- some of ...
NASA’s Perseverance rover has made very compelling observations in a Martian rock that, with further study, could prove that life was present on Mars in the distant past — but how can we determine that from a rock, and what do we need to do to confirm it? Morgan Cable, a scientist ...
It would also see the re-radiated thermal radiation of Jupiter-like planets at temperatures above approximately 130K. The device would be a 15m long truss with four SIRTF- like telescopes. It would need to be in a SIRTF-like Earth- trailing orbit, and would be radiatively cooled. A very...