It’s a bit mind-bending to realise that everything we know about the scale of the universe comes from people stuck on a tiny rock, peering through glass at dots of light. We can’t exactly pull out a ...

Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...

NASA’s OSIRIS-REx spacecraft flew by Earth on Sept. 24, 2023, dropping off its sample of dust and pebbles gathered from the surface of near-Earth asteroid Bennu. Analysis of this sample will help ...

distance scale, as well as to research the stellar life-cycle. relationship to distance. A 100-watt light bulb one mile away looks exactly as bright as a 25-watt light bulb half a mile away. So to ...

Trying to measure the size of the universe is no easy task. We know that the universe is expanding, though the exact rate of this expansion is not yet fixed. So one method that astronomers use to tell ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to comprehend sizes and distances given in these ...

NASA's Hubble Space Telescope spotted a blazing heat from a bright, lonely spiral galaxy called UGC 9391. But even though it lacks a companion, it serves as a guiding light for every astronomer who is ...

Pasadena, CA — Ohio State University researchers have found a way to measure distances to objects three times farther away in outer space than previously possible, by extending a common measurement ...