For the first time, direct evidence of lightning has been detected on Mars, say University of Michigan researchers who found signs of electrical discharges during dust storms on the Red Planet.
Space Exploration
Jun 17, 2009
3
0
The first signs of life emerged on Earth in the form of microbes about four billion years ago. While scientists are still determining exactly when and how these microbes appeared, it's clear that the emergence of life is ...
Earth Sciences
Feb 10, 2023
0
506
(PhysOrg.com) -- NASA scientists studying the origin of life have reproduced uracil, a key component of our hereditary material, in the laboratory.
Biochemistry
Nov 6, 2009
0
2
A new way to look at cancer—by tracing its deep evolutionary roots to the dawn of multicellularity more than a billion years ago—has been proposed by Paul Davies of Arizona State University's Beyond Center for Fundamental ...
General Physics
Jul 12, 2013
18
0
Charles Darwin described evolution as "descent with modification." Genetic information in the form of DNA sequences is copied and passed down from one generation to the next. But this process must also be somewhat flexible, ...
Evolution
Mar 4, 2024
0
342
Does the existence of life on Earth tell us anything about the probability of abiogenesis—the origin of life from inorganic substances—arising elsewhere? That's a question that has confounded scientists, and anyone else ...
Astrobiology
Sep 26, 2022
3
1733
On the night of January 16, 2018, a fireball meteor streaked across the sky over the Midwest and Ontario before landing on a frozen lake in Michigan. Scientists used weather radar to find where the pieces landed and meteorite ...
Space Exploration
Oct 27, 2020
0
1173
How did life begin on Earth and could it exist elsewhere? Researchers at Simon Fraser University have isolated a genetic clue—an enzyme known as an RNA polymerase—that provides new insights about the origins of life. ...
Evolution
Mar 19, 2021
25
6444
Life on a faraway planet—if it's out there—might not look anything like life on Earth. But there are only so many chemical ingredients in the universe's pantry, and only so many ways to mix them. A team led by scientists ...
Astrobiology
Sep 19, 2023
1
228
What were the first life forms like? In a new perspective article, scientists describe a strategy for answering this question by studying the earliest evolution of electron transport chains, a universal metabolic strategy ...
Evolution
Aug 14, 2023
0
1055
