That depends on the exoplanet. The chances of life existing on an exoplanet are significantly greater if that planet exists in the habitable zone of its star. Astronomers are also currently becoming aware of the possibility of "Hycean worlds." These planets are dominated by liquid oceans and ...
Gas in Venus atmosphere could be a sign of life Phosphine is a molecule that consists of one phosphorus and three hydrogen atoms. It is a very toxic gas. The only way phosphine is produced on Earth is by anaerobic bacterias that do not require oxygen for growth. We know that phosphine i...
In the past, tidally-locked planets were thought to have extremes climates, thus eliminating any possibility of life. As an example, the planet Mercury experiences a 3:2 spin-orbit resonance, meaning it rotates three times on its axis for every two orbits it completes of the Sun. ...
TRAPPIST-1’s nearness to Earth combined with the fact that the exoplanets are relatively large compared with the star means that it should be possible to study the exoplanet atmospheres. This would provide important information about chemical composition and the possibility of life. Climate studies...
A paper recently authored by Amit Kumar Jha from the University of Arizona and a team of astronomers explores this very possibility. They look at using interferometry techniques to achieve the required resolutions, at using advanced imaging techniques like the Quantum Binary Spatial Mode Demultiplexing...
One of the possible signs of life on distant habitable exoplanets is the red-edge, which is a rise in the reflectivity of planets between visible and near-infrared (NIR) wavelengths. Previous studies suggested the possibility that the red-edge position for habitable exoplanets around M-dwarfs may...
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is not unique in the universe. Our galaxy has hundreds of billions of stars, many with solar-like planetary systems, and there are hundreds of billions of galaxies in the universe. So it's reasonable to infer that Earth-like planets might be common, and the universe could teem with life....
This mechanism offers a different source of a possibility of abiotic oxygen in atmospheres of exoplanets from previously considered photodissociation of water vapor in upper atmospheres by extreme ultraviolet (XUV) light. Our order-of-magnitude estimation shows that possible amounts of oxygen produced ...
your onboard batteries would likely run out earlier than the arrival at the next star in your journey. Besides, you’d want to get to your destination at the soonest possible time, due to the likelihood of survival decreasing and the possibility of supplies running low increasing over time. ...