December 18, 2025 Quick space links
Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.
- Saturn’s biggest moon might not have an ocean after all
Or it may. Lots of uncertainties based on the limited available data.
- Graphic showing the nine small commercial launchers being developed in India
The tweet also notes it left out two more because they are in very early stages of development.
- Movie created from Perseverance’s navigation cameras, showing what it saw during its June 20, 2025 longest record drive, 1,350.7 feet
The drive was so long because the rover was returning across ground it had already traveled, and so it knew exactly what to expect.
- Interstellar Comet 3I/ATLAS makes its closest approach to Earth this week
You will still need a telescope to see it.
- On this day in 1903 the Wright Brothers achieved the first powered, heavier-than-air, manned airplane flight
And the rest is history, as nicely illustrated by the next link.
- On this day in 1972 Apollo 17 astronaut Ron Evans did a spacewalk on the way back from the Moon
The tweet shows some beautiful enhanced 16mm film of that spacewalk, done to retrieve film canisters from the outside of the Apollo service module.
Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.
- Saturn’s biggest moon might not have an ocean after all
Or it may. Lots of uncertainties based on the limited available data.
- Graphic showing the nine small commercial launchers being developed in India
The tweet also notes it left out two more because they are in very early stages of development.
- Movie created from Perseverance’s navigation cameras, showing what it saw during its June 20, 2025 longest record drive, 1,350.7 feet
The drive was so long because the rover was returning across ground it had already traveled, and so it knew exactly what to expect.
- Interstellar Comet 3I/ATLAS makes its closest approach to Earth this week
You will still need a telescope to see it.
- On this day in 1903 the Wright Brothers achieved the first powered, heavier-than-air, manned airplane flight
And the rest is history, as nicely illustrated by the next link.
- On this day in 1972 Apollo 17 astronaut Ron Evans did a spacewalk on the way back from the Moon
The tweet shows some beautiful enhanced 16mm film of that spacewalk, done to retrieve film canisters from the outside of the Apollo service module.












