A new study from the lab of Thomas Mallouk shows how microscale "rockets," powered by acoustic waves and an onboard bubble motor, can be driven through 3-D landscapes of cells and particles using magnets. The research was ...
Bio & Medicine
Oct 28, 2019
0
190
Did you know the sun has moss? Due to its resemblance to the earthly plants, scientists have named a small-scale, bright, patchy structure made of plasma in the solar atmosphere "moss." This moss, which was first identified ...
Astronomy
Apr 17, 2024
0
39
On Feb. 22, 1971, a sounding rocket lifted off from Wallops Island, Virginia, with specialized sensors aimed at the Crab Nebula, a bright cosmic object 6,500 light-years away. In those days, before recovering physical tapes ...
Astronomy
Apr 10, 2023
0
110
If you see the northern lights overhead, chances are you are in a chilly, polar climate. But the cold-weather delights—also known as aurora borealis—high above you are actually an important source of heat. A new NASA ...
Astronomy
Mar 21, 2022
0
117
A group of researchers is using artificial intelligence techniques to calibrate some of NASA's images of the Sun, helping improve the data that scientists use for solar research. The new technique was published in the journal ...
Astronomy
Jul 24, 2021
21
19486
Extremely precise measurements are possible using atom interferometers that employ the wave character of atoms for this purpose. They can thus be used, for example, to measure the gravitational field of the Earth or to detect ...
General Physics
Apr 13, 2021
0
3526
Each second, 1.5 million tons of solar material shoot off of the Sun and out into space, traveling at hundreds of miles per second. Known as the solar wind, this incessant stream of plasma, or electrified gas, has pelted ...
Space Exploration
Nov 25, 2019
8
187
Galaxies were once thought of as lonely islands in the universe: clumps of matter floating through otherwise empty space. We now know they are surrounded by a much larger, yet nearly invisible cloud of dust and gas. Astronomers ...
Astronomy
Oct 28, 2019
2
372
Deep in space between distant stars, space is not empty. Instead, there drifts vast clouds of neutral atoms and molecules, as well as charged plasma particles called the interstellar medium—that may, over millions of years, ...
Space Exploration
Jun 23, 2017
0
156
Watching the sun is dangerous work for a telescope. Solar instruments in space naturally degrade over time, bombarded by a constant stream of solar particles that can cause a film of material to adhere to the optics. Decades ...
Space Exploration
May 19, 2015
0
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