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OT: The Because Science Thread (Now With Aliens!)

Summer 1996, mid-Baja desert, Pacific coast side, near the beach, carpet of stars and a big-ass show off comet putting on a show. Don't remember the name of the comet. Great experience, nevertheless. Looked like an approaching motorbike lamp. Had the audacity to hang around for a few nights, too. 😊
 
I'm ready, let's go.

iu


Don't get here until after the world series though pls.
 

NASA confirms Earth now has two moons until 2083​

www.yahoo.com

NASA confirms Earth now has two moons until 2083

Earth just got a new tag-along in space — a little asteroid named 2025 PN7. NASA confirmed this week that the rock, discovered by the University of Hawaii, is officially a “quasi-moon” — a rare type of celestial companion that travels almost exactly in sync with Earth. So it’s not a true moon...
www.yahoo.com www.yahoo.com
 
Cal Gal said:
Shit. Remind me (again. . .🙄): is there enough atmosphere on Mars to carry sound?
Click to expand...
From our robot overlords:

Yes, there is sound on Mars, but it is much quieter and different than on Earth because of the planet's thin atmosphere. High-pitched sounds are nearly inaudible, while sounds are more muffled and travel shorter distances compared to Earth. NASA's Perseverance rover has captured sounds like wind and the rover's own mechanical noises, confirming that sound waves can propagate through the Martian atmosphere.

Key differences in Martian sound
  • Muffled and quiet:
    The low atmospheric pressure on Mars makes sounds much quieter and more muffled than on Earth.

  • High-frequency loss:
    The atmosphere is particularly poor at carrying high-pitched sounds, meaning things like a whistle would be almost inaudible.

  • Shorter range:
    Sound waves die out much more quickly, with a noise that would travel for kilometers on Earth only traveling a few tens of meters on Mars.

  • Two speeds of sound:
    A unique feature of Mars' atmosphere is that it causes two different speeds of sound to exist. Low-pitched sounds travel at about 240 m/s, while higher-pitched sounds travel slightly faster at 250 m/s.
Sounds captured on Mars
  • Wind: The sound of wind gusts has been recorded.

  • Rover sounds: The whirring of the Ingenuity helicopter and the crunching of the rover's wheels on rocks have been heard.

  • Laser impacts: The sound of the rover's laser hitting rocks can help scientists analyze the rocks' properties.
 
axlsalinger said:
From our robot overlords:

Yes, there is sound on Mars, but it is much quieter and different than on Earth because of the planet's thin atmosphere. High-pitched sounds are nearly inaudible, while sounds are more muffled and travel shorter distances compared to Earth. NASA's Perseverance rover has captured sounds like wind and the rover's own mechanical noises, confirming that sound waves can propagate through the Martian atmosphere.

Key differences in Martian sound
  • Muffled and quiet:
    The low atmospheric pressure on Mars makes sounds much quieter and more muffled than on Earth.

  • High-frequency loss:
    The atmosphere is particularly poor at carrying high-pitched sounds, meaning things like a whistle would be almost inaudible.

  • Shorter range:
    Sound waves die out much more quickly, with a noise that would travel for kilometers on Earth only traveling a few tens of meters on Mars.

  • Two speeds of sound:
    A unique feature of Mars' atmosphere is that it causes two different speeds of sound to exist. Low-pitched sounds travel at about 240 m/s, while higher-pitched sounds travel slightly faster at 250 m/s.
Sounds captured on Mars
  • Wind: The sound of wind gusts has been recorded.

  • Rover sounds: The whirring of the Ingenuity helicopter and the crunching of the rover's wheels on rocks have been heard.

  • Laser impacts: The sound of the rover's laser hitting rocks can help scientists analyze the rocks' properties.
Click to expand...
🙄

Now I'm back in Mr. O's astronomy class!!!

(👍😍)
 
The math/physics/comp-sci cats used to "chat" this stuff up. I hung out with 'em 'cuz they made great coffee. 😉
 
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