Bad wireless reception, the noise in the radio signal or poor visibility in the fog—all these annoyances have to do with the fact that waves such as visible light or microwave signals are deflected and reflected by numerous ...
General Physics
Jul 14, 2022
1
374
Sometime around 400 million years after the birth of our universe, the first stars began to form. The universe's so-called dark ages came to an end and a new light-filled era began. More and more galaxies began to take shape ...
Astronomy
Jul 13, 2022
0
264
Communications across the vastness of interstellar space could be enhanced by taking advantage of a star's ability to focus and magnify communication signals. A team of graduate students at Penn State is looking for just ...
Astronomy
Jul 6, 2022
0
239
The remnants of a collapsed neutron star, called a pulsar, are magnetically charged and spinning anywhere from one rotation per second to hundreds of rotations per second. These celestial bodies, each 12 to 15 miles in diameter, ...
Space Exploration
May 3, 2022
0
175
Researchers have developed a new analog photonic correlator that can be used to locate an object transmitting a radio signal. Because the new correlator is faster than other methods and works with a wide range of radio frequency ...
Optics & Photonics
Mar 24, 2022
0
47
All through history, humans have created and shared stories that ponder the creation of stars—what they are and how the first stars came to be. Now, with new results from the Hydrogen Epoch of Reionization Array (HERA), ...
Astronomy
Feb 11, 2022
4
376
On Sept. 18, NASA's InSight lander celebrated its 1,000th Martian day, or sol, by measuring one of the biggest, longest-lasting marsquakes the mission has ever detected. The temblor is estimated to be about a magnitude 4.2 ...
Planetary Sciences
Sep 22, 2021
0
707
The sun provides a daunting source of electromagnetic disarray—chaotic, random energy emitted by the massive ball of gas arrives to Earth in a wide spectrum of radio frequencies. But in that randomness, Stanford researchers ...
Earth Sciences
Jul 14, 2021
0
9
Researchers at the National Institute of Standards and Technology (NIST) and Wavsens LLC have developed a method for using radio signals to create real-time images and videos of hidden and moving objects, which could help ...
General Physics
Jun 25, 2021
0
261
We can't detect them yet, but radio signals from distant solar systems could provide valuable information about the characteristics of their planets.
Astronomy
Jun 23, 2021
1
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