A few hundred thousand billion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way. So argues an international team of scientists led by Professor Chandra Wickramasinghe, Director ...
Astronomy
May 10, 2012
53
0
Was Christopher Columbus really from Genoa, in Italy? Or was he Spanish? Or, as some other theories have it, was he Portuguese or Croatian or even Polish?
Other
May 19, 2021
3
297
Ancient Mars may have had an environment capable of harboring an underground world teeming with microscopic organisms, French scientists reported Monday.
Planetary Sciences
Oct 10, 2022
2
610
(Phys.org) —In the hunt for early life, geobiologists seek evidence of ancient microbes in the form of trace fossils – geological records of biological activity – embedded in lavas beneath the ocean floor. Filamentous ...
Earth may have been far more oxygen-rich early in its history than previously thought, setting the stage for the evolution of complex life, according to new research by scientists at the University of Alberta and the University ...
Earth Sciences
May 12, 2020
2
3034
Early life forms on Earth may have been able to generate metabolic energy from sunlight using a purple-pigmented molecule called retinal that possibly predates the evolution of chlorophyll and photosynthesis. If retinal has ...
Earth Sciences
Oct 16, 2018
0
300
If there ever was life on Mars—and that's a huge "if"—conditions during the planet's infancy most likely would have supported it, according to a study led by University of Arizona researchers.
Astronomy
Oct 16, 2022
1
28
Ancient fossils have shed new light on a type of sea worm linking it to the time of an evolutionary explosion that gave rise to modern animal life.
Evolution
Jan 31, 2023
0
124
(Phys.org) —Scientists may not know for certain whether life exists in outer space, but new research from a team of scientists led by a University of South Florida astrobiologist now shows that one key element that produced ...
Earth Sciences
Jun 4, 2013
18
2
(Phys.org) —Researchers at the University of Leeds may have solved a key puzzle about how objects from space could have kindled life on Earth.
Earth Sciences
Apr 4, 2013
11
2
