#KnowledgeBit: #Pioneer 10 (originally designated Pioneer F) is an American space probe, launched in 1972 and weighing 260 kilograms (570 pounds), that completed the first mission to the planet Jupiter.
Between July 15, 1972, and February 15, 1973, it became the first spacecraft to traverse the #AsteroidBelt.
Yet another video of the asteroid belt using Gaia DR3 data with the new shading.
#GaiaSky #Gaia #GaiaDR3 #Space #Asteroids #AsteroidBelt #Astronomy
Asteroid Belt for the TI-99/4A
https://youtu.be/M-sz_im4pvc?si=yxrWL41KTbw2pRET
#AsteroidBelt #Action #JBFreeware
Taking gravity measurements into the future 🌍🛰️
#AsteroidBelt #Asteroids #EOinfographic
⏩ 2 new pictures from ESA https://commons.wikimedia.org/wiki/Special:ListFiles?limit=2&user=OptimusPrimeBot&ilshowall=1&offset=20251031060106
We have evaluated the rate at which the asteroid belt is losing material, and how it splits between macroscopic bodies and meteoritic dust. The mass loss process is due to the injection of asteroid fragments into unstable dynamical regions, associated to mean-motion resonances with Jupiter, Saturn and Mars or secular resonances, from where they are scattered either to the region of the terrestrial planets or to the vicinity of Jupiter's orbit. Asteroid fragments that do not escape from the belt are ground down by mutual collisions to meteoritic dust. Under the assumption that 25\% of the zodiacal dust mass is of asteroidal origin, we find that the asteroid belt is currently losing a fraction of about $μ_o \simeq 8.8 \times 10^{-5}$ Ma$^{-1}$ of its collisionally-active mass (without the primordial objects Ceres, Vesta and Pallas), about 20\% as macroscopic bodies, and 80\% as dust particles that feed the zodiacal dust cloud. Extrapolation of the current mass loss rate to the past suggests only a moderate increase of the asteroid belt mass and the mass loss rate around 3.0 - 3.5 Ga ago (by about 50\% and a factor of two respectively). Yet, should the computed $μ_o$ be somewhat underestimated owing to the different uncertainties associated to its computation, the extrapolation to the past would lead to quite different results. For instance, a moderate increase in the computed $μ_o$, say by a factor of three, would lead to an exponential increase of the asteroid mass and mass loss rate about 3.5 Ga ago. A greater asteroid mass loss rate in the past should be correlated with a more intense impact rate of the Earth, Moon and the other terrestrial planets, which is indeed what suggests the geologic record (Hartmann 2007).
"Professor, you said on the phone that you had great news?"
"Yes. I've solved a crime."
"How did you do this?"
"It was easy as pie."
"That easy, eh?"
"You don't understand. I'm a terrible cook. My pies look like pancakes. When I say 'as easy as pie,' I mean it was hard."
"Oh. Well. What have you found?"
"You know the asteroid belt."
"Yes."
"Do you know it used to be a planet?"
"No. I did not know this."
"Yes. The reason it is now a bunch of asteroids is that the planet it used to be was shot!"
"Wow! Do you know who did it?"
"Yes. It was Mars. Mars had the gun that shot at the planet."
"How did you figure it out?"
"Piece of cake..."
"No, I'm full."
"As I was saying, piece of cake, the gun is still visible on Mars."
"Astounding!"
"You won't guess what's next."
"What?"
"Earth was the getaway driver!"
#QuizOfTheDay: #AsteroidBelt is place in our solar system where small bodies, mostly rocky and some metallic, orbit the sun.
Do you know Asteroid Belt is located between which two planets? #AsteroidDay
A. Mars and Earth
B. Mars and Jupiter
C. Earth and Jupiter
D. Jupiter and Saturn
https://knowledgezone.co.in/resources/quiz?qId=630ee9230a8231030a494df6
Ceres: The Frozen Ocean World Between Mars & Jupiter — NASA’s Stunning Discovery!
#Ceres, #FrozenOceanWorld, #NASADiscovery, #DwarfPlanet, #AsteroidBelt, #SpaceExploration, #Astrobiology, #PlanetaryScience, #IceAndRock, #OceanWorld, #StunningDiscovery, #SpaceMysteries
Knowledge Zone
Jumping Langur
charring auh
Highretrogamelord
OptimusPrimeBot
Steven Saus
Daniel Fischer
Your Autistic Life FR/EN/ES
Jacky Kapadia