[jncfhnb]

Suppose a planet like this had non intelligent megafauna life. How could we detect this?

[dudinax]

One way is to build bigger telescopes and hope its not too cloudy.

[floxy]

"Direct Imaging of an Exoplanet with a Solar Gravity Lens (1 Km Resolution)":

https://arxiv.org/abs/1802.08421

...and an excellent video on the topic:

https://www.youtube.com/watch?v=NQFqDKRAROI