HercuList Secrets

Interstellar meteor fragments found? Harvard astronomer's claim sparks debate, criticism

Avi Loeb is back. The former chair of the Harvard Astronomy Department recently returned from an expedition to the Pacific Ocean near Papua New Guinea that dragged a magnetic sled across the seafloor in an attempt to find fragments of what Loeb claims ...

1st evidence found for 'Trojan planet' worlds occupying same orbit

"Co-orbital planets are 'fossils' of the planetary formation processes; at present, they are like unicorns." Comments (0). glowing orange rings, which indicate a young planetary system, against the blackness of space. Obsevations of the exoplanet PDS ...

'Hidden' photons could shed light on mysterious dark matter

A new experimental technique placed constraints on a potential candidate for dark matter called 'dark photons.' Comments (0). interconnected pinkish filaments form a spiderweb pattern against a dark-blue background. A visualization of dark matter ...

A year of discovery from the James Webb Space Telescope

WBUR

WBUR

Nikole Lewis, Associate Professor of Astronomy at Cornell University. She's involved with dozens of observational campaigns with the former Spitzer and current Hubble and JWST Space Telescopes. Previously she served as the JWST project scientist at the ...

Scientific American

JWST Might Have Spotted the First Dark Matter Stars

Scientific American

These stellar objects, called "dark stars," might not have been fueled not by nuclear fusion but by the self-annihilation of dark matter—the invisible stuff that is thought to make up about 85 percent of the matter in the universe.

Webb sees carbon-rich dust grains in the first billion years of cosmic time

For the first time, the James Webb Space Telescope has observed the chemical signature of carbon-rich dust grains in the early universe. Similar observational signatures have been observed in the much more recent universe, and have been attributed to ...

PandaX sets new constraints on the search for light dark matter via ionization signals

In dual-phase xenon detectors, like the PandaX detector, dark matter could typically manifest itself via a prompt scintillation signals (S1) and an ionization signal (S2). To reduce the threshold energy at ...

James Webb Space Telescope makes 1st detection of diamond-like carbon dust in the universe's earliest stars

The discovery suggests the earliest galaxies formed more quickly after the Big Bang than previously thought. Comments (1). An illustration shows carbon PAH molecules surrounding early galaxies seen bt the JWST. An illustration shows carbon PAH ...

An ancient river is helping NASA's Perseverance Mars rover do its work

NASA's Perseverance Mars rover sealed the tube containing its 20th rock core sample on June 23 (the 832nd Martian day, or sol, of the mission), and the mission's science team is excited about its potential. That's because this sample was drilled by the ...

Molecular features driving cellular complexity of human brain evolution

Nature.com

Nature.com

Here we analysed single-nucleus RNA-sequencing and single-nucleus assay for transposase-accessible chromatin with sequencing datasets for human, chimpanzee and rhesus macaque brain tissue from posterior cingulate cortex. We show a human ...