Redirect Notice
The previous page is sending you to
https://www.astronomy.com/science/if-another-planet-existed-that-was-precisely-our-size-and-in-our-exact-orbit-but-placed-behind-the-sun-would-we-have-the-means-to-detect-its-existence/
.
If you do not want to visit that page, you can
return to the previous page
.