What Is the Metabolism-First Theory of Life?
The metabolism-first theory proposes that self-sustaining chemical networks preceded genes, RNA, and cells in the origin of life.
The metabolism-first theory proposes that self-sustaining chemical networks preceded genes, RNA, and cells in the origin of life.
Some massive stars may collapse quietly into black holes instead of exploding. Gravitational waves could reveal these hidden stellar deaths through later mergers.
Sierra Space’s Dream Chaser received FAA clearance for runway landings, advancing its planned aircraft-style return from space and 12,000-pound cargo capability.
The Southern Taurids may produce bright fireballs on November 11, 2026. Learn when to watch, where to look, and how to improve your chances.
A scientific mission launched in Duluth is investigating whether Lake Superior can support underwater research into elusive particles, including neutrinos.
A new simulation offers clues about how the Milky Way’s central region formed, while clarifying the difference between cosmic origins and galaxy evolution.
Robotic in-orbit assembly could enable larger, modular spacecraft and orbital infrastructure while reducing the limits imposed by rocket fairings.
Webb’s mysterious little red dots may be a temporary phase in young black-hole growth, though compact galaxies and early stars remain possible explanations.
NASA is not paying ordinary applicants to move to the Moon. The $164,000 claim appears to combine a simulated habitat study with astronaut salary reports.
Fossil teeth from Thailand reveal a giant Eocene rodent that may have weighed up to 66 pounds, expanding knowledge of rodent evolution in Asia.
Astronomers may have detected a distant object beyond Pluto, but its identity, orbit, size, and dwarf-planet status remain unconfirmed.
Uranus has a sharply tilted, off-center magnetic field that has puzzled scientists since Voyager 2 observed it in 1986. Its hidden interior may hold the answer.
Brilliant fireballs may appear over Idaho, but no verified date or peak time is available. Learn how to confirm the forecast and watch safely.
Ice-core records show that early 20th-century copper production released widespread atmospheric pollution, including substantial arsenic contamination far beyond mines and smelters.
# After 40 Years of Searching, Physicists Find Evidence for an Ultrarare Particle Decay Physicists have reportedly found evidence for an ultrarare particle decay after more than f
Mars and Jupiter will appear close together in the night sky. Learn when to look, how to identify them, and why possible fireballs are unrelated.
A planet-like object about 1,000 light-years away reportedly disappeared from view. Here is what astronomers observed—and why it may not have been a planet.
Voyager 1 is expected to reach one light-day from Earth on November 18, creating a major distance milestone and a roughly two-day communication round trip.
NASA’s twin ESCAPADE probes completed a coordinated Earth gravity-assist maneuver, adjusting their trajectories as they continue their journey toward Mars.
The longest feather found preserved in amber offers a rare three-dimensional view of early feather diversity, while leaving its owner and flight ability uncertain.