Exoplanets with two suns sprout black plants: Study
Washington: Exoplanets with two suns may have trees and shrubs that are black or grey instead of the more familiar green, according to a new study.
It also suggested that flora that would appear black or grey to human eyes could have evolved on planets orbiting dim "red dwarf" stars.
This would enable plants to absorb more light to photosynthesise, using their star``s light to convert carbon dioxide into organic compounds.
Jack O``Malley-James, a PhD student and astrobiologist at St Andrews University, focused on multiple star systems thought to be common throughout the universe.
He used models for star systems with two or three stars with various combinations of Sun-like and red dwarf stars. He then added planets to these models, orbiting around one or more of the stars.
Flora on those planets would have to adapt to very different light conditions in order to photosynthesise.
"The temperature of a star determines its colour and, hence, the colour of light used for photosynthesis. Depending on the colours of their starlight, plants would evolve very differently," said James.
If a planet``s light source comes primarily from a red dwarf, then the researcher believes any possible plant life could be black or grey.
"Plants with dim red dwarf suns, for example, may appear black to our eyes, absorbing across the entire visible wavelength range in order to use as much of the available light as possible," said James.
The study was presented at the National Astronomy Meeting in Llandudno, Wales.
More from India
More from World
More from Sports
More from Entertaiment
- Bird flu grips nation, Delhi worst affected
- I pay my tribute to martyr Naresh Pal: PM Narendra Modi
- Some people are creating confusion between me and my father: Akhilesh Yadav
- Ramgopal Yadav writes to SP workers after Akhilesh Yadav suspends Shivpal Yadav
- Ramgopal Yadav writes letter to SP party workers after Akhilesh Yadav sacked Shivpal Yadav
- India vs New Zealand, 3rd ODI: As it happened...
- This is why Cyrus Mistry was removed as Chairman of Tata Sons!
- Prompt action on border pushes Pak to offer olive branch, says both sides need to 'formalise' 2003 ceasefire
- 7th Pay Commission: Committee on Allowances proposes hike in HRA for central govt employees
- Tata Sons removes Cyrus Mistry as Chairman; Ratan Tata interim boss for 4 months