Building a Terrascope


The Earth’s mass is way too low to build a “terrascope” using “gravitational lensing”. But, luckily, distant starlight passing through the Earth’s atmosphere is refracted by an angle of just over one degree near the surface. The focus of this “lens” is located just beyond the orbit of the Moon. Placing an orbiting detector between Earth and one Hill radius Notes 1 could exploit this refractive lens – practically turning Earth into a telescope.

M. Özgür Nevres

I am a software developer, an ex-road racing cyclist, and a science enthusiast. Also an animal lover! I write about the planet Earth and science on this website, You can check out my social media profiles by clicking on their icons.

Latest posts by M. Özgür Nevres (see all)


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.