Fingers made of laser light: Controlled grabbing and rotation of biological micro-objects

Peto’s Paradox – Biological Enigma Offers New Insights Into the Mystery of Cancer

Can someone explain how a telescope can “see back in time”? I understand the concept of reading infrared light, and that light travels, so is it that the light it will be looking at has traveled through time and as such, is a glimpse back in time? Thanks redditors!!

Microorganism sheds new light on cancer resistance