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153,650 articles from ScienceDaily

Brightest stars in the night sky can strip Neptune-sized planets to their rocky cores

Why are Neptune-sized planets rare among exoplanets discovered to date? A 'warm Neptune' recently found by astronomers around a bright blue A-type star provides a clue. Astronomers have proposed that gas giants like Neptune would be stripped of their gas in close orbits around a star -- the limited region current exoplanet-finding techniques are able to sample. The warm Neptune is just outside the...


Hubble sees red supergiant star Betelgeuse slowly recovering after blowing its top

The star Betelgeuse appears as a brilliant, ruby-red, twinkling spot of light in the upper right shoulder of the winter constellation Orion the Hunter. But when viewed close up, astronomers know it as a seething monster with a 400-day-long heartbeat of regular pulsations. This aging star is classified as a supergiant because it has swelled up to an astonishing diameter of approximately 1 billion...

Why thinking hard makes you tired

It's no surprise that hard physical labor wears you out, but what about hard mental labor? Sitting around thinking hard for hours makes one feel worn out, too. Now, researchers have new evidence to explain why this is, and, based on their findings, the reason you feel mentally exhausted (as opposed to drowsy) from intense thinking isn't all in your head.

Bioengineered cornea can restore sight to the blind and visually impaired

Researchers and entrepreneurs have developed an implant made of collagen protein from pig's skin, which resembles the human cornea. In a pilot study, the implant restored vision to 20 people with diseased corneas, most of whom were blind prior to receiving the implant. The promising results bring hope to those suffering from corneal blindness and low vision by providing a bioengineered implant as...

First stars and black holes

Just milliseconds after the universe's Big Bang, chaos reigned. Atomic nuclei fused and broke apart in hot, frenzied motion. Incredibly strong pressure waves built up and squeezed matter so tightly together that black holes formed, which astrophysicists call primordial black holes. Did primordial black holes help or hinder formation of the universe's first stars, eventually born about 100 million...


One more clue to the Moon's origin

Researchers discover the first definitive proof that the Moon inherited indigenous noble gases from the Earth's mantle. The discovery represents a significant piece of the puzzle towards understanding how the Moon and, potentially, the Earth and other celestial bodies were formed.

Extreme heat and drought events require more systematic risk assessment

Simultaneous extreme heat and drought events have consequences in a variety of areas -- for example the economy, health and food production. In addition, due to complex socio-economic connections, such extreme events can cause knock-on effects, researchers have shown. More systematic risk assessments are needed to make affected regions more resilient.

Building on the moon and Mars? You'll need extraterrestrial cement for that

Researchers are exploring ways to use clay-like topsoil materials from the moon or Mars as the basis for extraterrestrial cement that could be used by astronauts to create building materials for life in outer space. Scientists have converted simulated lunar and Martian soils into geopolymer cement, which is considered a good substitute for conventional cement.

New study reveals computation-guided approach to suppressing cancer tumor growth

A new study reveals a new computation-guided approach to identify small molecules that can restore aspects of wild-type p53 tumor suppression function to mutated p53, which play an important role in many human cancers. This approach was successful both in vitro and in vivo. This strategy can increase chemical diversity of p53 corrector molecules for clinical development.