When plants are wounded, they send out warning signals that spread to other leaves, raising the alarm and activating defense mechanisms. Researchers have captured this activity by making the plant glow as shown in this video.
https://video.nationalgeographic.com/video/news/00000165-d434-d136-af6d-f53e3b8b0000
Thread: A moon makes Jupiter's aurora
Io, Jupiter's volcanic moon, spews out 600kg of sulfur dioxide every second into SPACE, forming a torus that encircles Jupiter. The torus becomes electrically charged and gets STUCK to Jupiter's magnetic field. [1/3] pic.twitter.com/corgQnDNLZ— Dr James O'Donoghue (@physicsJ) September 7, 2019
New! Relative Cosmic Velocities
Driving on a highway at a constant speed, you don't really feel your motion (aside from the vibrations). In the same way, we also don't 'feel' these cosmic velocities pic.twitter.com/2Pfq2tgurd— Dr James O'Donoghue (@physicsJ) September 8, 2019
“What does Saturn have that Jupiter lacks, beside the obvious rings?” Pontius asked. The answer: seasons. Saturn’s axis is tilted about 27 degrees, similar to Earth’s 23-degree tilt. Jupiter has barely any tilt at all—just 3 degrees.
https://phys.org/news/2019-09-saturn-impossible-rotation.html
