sun

View: https://www.youtube.com/shorts/Xekdn4w6apI

I read an article on using the sun's gravity as a giant telescope lens. See https://www.space.com/earth-like-exoplanet-imaging-with-sun . Great idea but it said the focal point is too far away to use this idea right now. What I don't understand is why we have to jump straight to using the sun...

What if the Earth's star was two stars? Like, the kind that orbits each other. If there were that in the middle of the solar system, what would conditions on Earth be like? Would life as we know it be able to exist?