How asteroids may have sparked life on Earth

Ancient asteroid impacts may have done more than reshape Earth's surface—they could have helped spark life itself. New computer models show the collisions created enormous underground hydrothermal systems by cracking the planet's crust and allowing hot water to flow through it. These long-lasting, life-friendly environments may have covered much of the early Earth, turning cosmic destruction into an unexpected opportunity.

from All Top News -- ScienceDaily https://ift.tt/VdK9nN7

The Milky Way’s weird gamma-ray glow may be dark matter after all

A strange gamma-ray glow at the center of the Milky Way has long sparked debate over whether it comes from hidden neutron stars or elusive dark matter. By applying machine learning to more than a million simulated observations, researchers included photon energy data for the first time and reached a different conclusion than many earlier studies.

from All Top News -- ScienceDaily https://ift.tt/HgqT0ks

A massive asteroid slammed into the North Sea and triggered a 330-foot tsunami

Scientists have finally confirmed the origin of the mysterious Silverpit Crater beneath the North Sea. New evidence shows that an asteroid about 160 meters wide struck the seabed roughly 43 to 46 million years ago. The impact triggered a tsunami more than 100 meters high and left behind a crater that geologists debated for years.

from All Top News -- ScienceDaily https://ift.tt/ciR7NHW

USC scientists just unlocked an endless supply of cancer-fighting immune cells

A new stem-cell-inspired technique allows scientists to grow vast numbers of immune-cell progenitors that can be engineered to hunt cancer and strengthen immune responses. In animal studies, the cells fought tumors, restored immune function, and showed promise as a durable, off-the-shelf therapy platform.

from All Top News -- ScienceDaily https://ift.tt/ZClhOPU

Physicists create a strange new quantum state called a fractional fermi sea

Researchers have shown that ultracold atoms can be driven into a strange new quantum state called a fractional Fermi sea, where particles organize themselves in unexpected ways. The discovery points to a new phase of matter that goes beyond established quantum theories and could expand the possibilities of quantum simulation.

from All Top News -- ScienceDaily https://ift.tt/x2NW8UG

Common pesticide linked to more than double the risk of Parkinson’s disease

Scientists at UCLA have linked long-term exposure to the pesticide chlorpyrifos with a sharply increased risk of Parkinson’s disease. People exposed to the chemical near their homes were more than twice as likely to develop the condition. Laboratory studies showed that chlorpyrifos damages dopamine neurons and interferes with the brain’s ability to remove toxic protein buildup.

from All Top News -- ScienceDaily https://ift.tt/oxDJty3

A rare supernova peeled back a star’s layers and revealed a hidden secret

Astronomers studying the rare supernova SN 2021yfj discovered material from one of the deepest layers of a dying star, providing a rare look at its hidden interior. The finding confirms key theories about how massive stars forge the elements that help build planets, worlds, and life.

from All Top News -- ScienceDaily https://ift.tt/S76p5Fh

Scientists discover what triggers belly fat as we age

Aging may trigger the appearance of specialized stem cells that supercharge the body's ability to create new belly fat. The discovery reveals a potential biological driver of middle-age weight gain and a promising target for future anti-obesity treatments.

from All Top News -- ScienceDaily https://ift.tt/ImWCZ7z

Butter and margarine look similar but their chemistry changes everything

The battle between butter and margarine comes down to chemistry. Butter’s naturally occurring fats create rich flavors, golden browning, and flaky baked goods, while margarine’s modified plant oils offer consistency and a longer shelf life. Although both contain mostly fat, their different structures influence how they behave in recipes. Understanding those differences can help you choose the right one for cooking, baking, or health goals.

from All Top News -- ScienceDaily https://ift.tt/smkTlEQ

Scientists discover how a single cell builds a brain with 170 billion cells

How does a single cell build a brain with billions of precisely organized neurons? Researchers suggest that brain cells use their lineage—their cellular family tree—as a kind of positional map. Cells that come from the same ancestor stay near one another, helping the brain organize itself without relying solely on chemical signals.

from All Top News -- ScienceDaily https://ift.tt/rK9MvwL

Scientists discover hidden “footprints of death” that may help viruses spread

Scientists have uncovered a surprising new twist in what happens when cells die. As dying cells break apart, they leave behind tiny “footprints of death” packed with newly discovered particles that help guide the immune system to clean up the remains. But researchers found that influenza viruses can exploit this process, hiding inside these microscopic packages and potentially using them to spread to nearby cells.

from All Top News -- ScienceDaily https://ift.tt/MxHgY3l

New brain study reveals speech learning works differently than we thought

A new study suggests that learning and remembering speech relies more on how the brain processes sounds and sensations than on the areas that control mouth and face movements. The discovery could reshape speech therapy and help improve future brain-based communication technologies.

from All Top News -- ScienceDaily https://ift.tt/xjgHfnm

Meteorite reveals a lost moon-sized world from the dawn of the solar system

A rare meteorite has revealed evidence of a massive lost world that once orbited the young Sun before being destroyed in a catastrophic collision. The discovery suggests some early planets formed from dramatically different materials than Earth and Mars, rewriting part of the solar system’s origin story.

from All Top News -- ScienceDaily https://ift.tt/EGo8yKt