How does a young earth explain how we can see the light of distant stars? (rachelheldevans.com)
As instruments improved, astronomers detected smaller wobbles caused by smaller planets, until in 2004 a team using the Hobby - Eberly Telescope was arguably the first to find a super-Earth, 55 Cancri e. Others were revealed when their gravity briefly magnified the light of a distant star, a process known as gravitational lensing. (discovermagazine.com)
Although dark matter does not reflect light — hence the name — astronomers can detect the way its gravity bends the light of distant stars behind it, an effect called gravitational lensing. (scientificamerican.com)