Saturn's rings are undergoing significant changes, with theories suggesting that the material may eventually crash into the planet or drift away. Current models estimate the lifespan of the rings to be around 50,000 years, indicating that their stability is temporary. The formation of the rings is often attributed to a moon being torn apart by tidal forces, resulting in debris that orbits Saturn. Observations show that the rings are dynamic, and their evolution is a slow process over astronomical timescales. Understanding these changes enhances our appreciation of Saturn's beauty during our current era.
Most theories of ring formation involve a moon being broken up by tidal forces. The resulting debris eventually makes its way back to the parent planet; most theories predict about a 50,000 year lifespan. In that respect, we're lucky to live at a time when Saturn is so resplendent.
Partial solar eclipse from Twizel, South Isl., New Zealand ...
almost missed it due to cloud, didnt see max at 0710 NZST as it went back into cloud.
20250922, 0701NZST
Canon 6D II 70-200mm @200mm,
F4, 100th sec, 1600ISO
Makeshift solar filter made out of solar eclipse sunglasses
Is a homemade radio telescope realistic?
There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs.
Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed).
n.b. I start this...