-Hominid-
-Hominid- t1_iy2xfvl wrote
It was never real money to begin with.
-Hominid- t1_iwpet0e wrote
Reply to What is your favourite space movie? (Hope this isn’t to shallow for this sub) by Oztravels
The Expanse, hands down... it's a show tho.
Movie, probably Starship Troopers.
-Hominid- t1_iv593ze wrote
Reply to Why have the volcanoes ceased erupting on our closest solar system neighbors? by Educational_Dog7430
Mars may have had volcanic activity as recently as 50,000 years ago.
Venus and Mars lack plate tectonics, which is a huge driver of volcanoes on Earth. Mars is also a lot smaller and has lost more of its internal heat because of this. Venus has more volcanoes than any other planet, but its thick atmosphere and very high surface pressures makes it harder to study for current activity.
-Hominid- t1_iucvpmu wrote
Reply to Everyone here right now by ozzymustaine
He's a loser because he's a moron.
-Hominid- t1_itbe2t1 wrote
Reply to Is a regular, yearly, predictable comet astronomically possible? (For fiction idea) by InPurpleIDescended
Yes, this is very possible. It has to do with orbital resonances, and quasi-satellites.
The object would have an orbit that looks quite different from Earth, but nearly the exact same orbital period. If the eccentricity is higher, meaning at perihelion it is much closer to the sun than Earth, and Aphelion is much farther, it will appear in the same location of the sky each year. This is called the synodic period.
There are quite a few known asteroids that do this, one is 2014 OL339.
Notice that if you speed time up on the app, the asteroid is always nearly in the same location of the sky each time Earth passes it.
That would just have to be a comet.
This brings up other issues though. Comets are balls of ice and rock. They tend to cook when they get that close to the sun. The ice will eventually all sublimate away into space leaving a dead comet core behind.
This hypothetical comet would have to have been recently captured into this orbit.
Another issue is the orbit of said comet would not be stable, as when comets heat up and start off gassing, they create jets of gas that can push the comet around. These are called nongravitational forces and they'd likely push the comet out of that orbit after a while.
Quasi-satellites are also unstable configurations.
-Hominid- t1_j0p3wb1 wrote
Reply to My first ever photo of the moon, view from my balcony with a cheap and old telescope that i borrow to a friend. iPhone 14 Pro. Far from the beautiful photos that i see here, but im still proud of it :) by Rascar_Capak
Carful, that is how it started for me too. I have a career in astronomy now.