Black Dwarf and Preparing to Flee

"This thing is indeed a bit scary."

After getting up, Tang Rui went to the laboratory to start making a space telescope.

After all, whether there is a large mass celestial body in that area or not, just taking a picture will tell.

Wild guessing was meaningless.

What about alien civilizations monitoring Earth with their spaceships?

What a joke.

What material is used to make an alien spaceship that has one-third the mass of the Sun?

Materials notwithstanding, A civilization capable of constructing such a massive spaceship would have already been able to shield its own gravity.

We on Earth know how to make airplanes invisible.

Wouldn't aliens know that gravitational waves would expose their existence? Is it possible?