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When these waves are converted into audio signals, scientists have found them to sound similar to birds chirping. Schematic showing occurrence of chorus waves (Chengming Liu et al., Nature (2025))
The name was given because the sound slowly decreases in frequency over about seven minutes. It was recorded using an autonomous hydrophone array. [8] The sound has been picked up several times each year since 1997. [9] One of the hypotheses on the origin of the sound is moving ice in Antarctica. Sound spectrograms of vibrations caused by ...
Videos of eerie noises erupting from the skies have recently surfaced on YouTube, sending people into a panic around the world. The video above shows a particularly frightening episode of this ...
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If one reference frame assigns precisely the same time to two events that are at different points in space, a reference frame that is moving relative to the first will generally assign different times to the two events (the only exception being when motion is exactly perpendicular to the line connecting the locations of both events).
On Saturn, like on Jupiter, the north magnetic pole is located in the northern hemisphere, and the south magnetic pole lies in the southern hemisphere, so that magnetic field lines point away from the north pole and towards the south pole. This is reversed compared to the Earth, where the north magnetic pole lies in the southern hemisphere. [13]
The unusual image was taken by a camera on the Cassini spacecraft on April 8, 2016, at a distance of about 1.4 million miles away from Saturn. NASA spots mysterious activity in Saturn's F Ring ...
A relativistic jet coming out of the center of an active galactic nucleus is moving along AB with a velocity v, and is observed from the point O. At time t 1 {\displaystyle t_{1}} a light ray leaves the jet from point A and another ray leaves at time t 2 = t 1 + δ t {\displaystyle t_{2}=t_{1}+\delta t} from point B.