

But we can’t see planet surfaces yet. The most we have achieved is seeing a dark smudge in front of a light smudge.
Most planets are detected either by the star wobbling a little due to the planet pulling on it through gravity. Think a light smudge going a pixel to the left and then a pixel to the right.
Or by detecting a star getting slightly darker when a planet passes in front of it. This lets us guess the composition of the atmosphere when we filter the star light through a prisma and analyse which wavelengths of light we have a smidgen less of.
It’s amazing what we can do. But we’re still a far way away from actually seeing extrasolar planets.
Sure, go ahead.