(phys.org)

197 points amichail | 5 comments | 15 Oct 24 11:52 UTC | HN request time: 1.036s | source

1. asdfman123 ◴[16 Oct 24 22:24 UTC] No.41864452[source]▶

Could we do a less extreme version of this with a planet in the solar system? Or would a probe have to be too far away from it?

2. worldsayshi ◴[16 Oct 24 22:30 UTC] No.41864505[source]▶

Cool worlds YouTube channel has a great video about Earth sized telescopes:

3. yodon ◴[16 Oct 24 22:31 UTC] No.41864509[source]▶

A planet would be a weaker lens so you'd have to be even farther away, and you'd have less collecting area as well.

4. mbrubeck ◴[16 Oct 24 23:10 UTC] No.41864829[source]▶

If you use Earth, you can use atmospheric lensing (rather than gravitational) to get a focal point inside the Earth–Moon system: https://www.scientificamerican.com/article/earth-could-be-a-...

5. ◴[17 Oct 24 02:30 UTC] No.41865878[source]▶

A solar gravitational lens will be humanity's most powerful telescope (2022)