The 'baritone' of red giants refines cosmic distance measurements
A fresh look at red giant stars offers key insights into cosmic distance measurements and a way to measure the universe's expansion with the highest accuracy.
A fresh look at red giant stars offers key insights into cosmic distance measurements and a way to measure the universe's expansion with the highest accuracy.
Astronomy
Mar 15, 2024
0
100
I've seen things you people wouldn't believe. Rodents eating herbal remedies. I watched a truck mistaken for an alien message. All those moments will be lost in time, like the Upper West Side under land subsidence.
Sound waves thought to be from a 2014 meteor fireball north of Papua New Guinea were almost certainly vibrations from a truck rumbling along a nearby road, new Johns Hopkins University-led research shows. The findings raise ...
Astronomy
Mar 7, 2024
5
348
Imagine that you're in a comfortable room with your cat. You're both sharing the same space, temperature and lighting. But while you're enjoying the décor, and perhaps a book or the taste of hot chocolate, the cat seems ...
Plants & Animals
Mar 5, 2024
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27
Unlike most animals that rely on visual senses, bats navigate and locate prey or obstacles through echolocation. By emitting sounds and comparing them to the reflected echoes, bats can "visualize" movement in the environment. ...
Plants & Animals
Feb 28, 2024
0
23
Thanks to the rapid progress in tiny tech, we've been mainly using microfluidics to sort tiny particles by size. But now, there's a new way to sort them by shape, which could be a big deal for medical tests and chemistry. ...
Nanomaterials
Feb 23, 2024
0
4
We now have a standard model of cosmology, the current version of the Big Bang theory. Although it has proved very successful, its consequences are staggering. We know only 5% of the content of the universe, which is normal ...
Astronomy
Feb 22, 2024
6
48
A new system that harnesses the power of AI to accurately model how sound waves travel underwater could help reduce the impact of noise pollution on marine life.
Ecology
Jan 25, 2024
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1
A team of scientists at the Max Planck Institute for the Science of Light led by Dr. Birgit Stiller has succeeded in cooling traveling sound waves in waveguides considerably further than has previously been possible using ...
Optics & Photonics
Jan 18, 2024
0
140
Atoms can absorb and reemit light—this is an everyday phenomenon. In most cases, however, an atom emits a light particle in all possible directions—recapturing this photon is, therefore, quite hard.
Optics & Photonics
Jan 16, 2024
4
171
Longitudinal waves are waves that have same direction of oscillations or vibrations along or parallel to their direction of travel, which means that the oscillations of the medium (particle) is in the same direction or opposite direction as the motion of the wave. Mechanical longitudinal waves have been also referred to as compressional waves or compression waves.
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