Recent content by Mekon

Thanks for both replies. :)

When I view the Orion Nebula through my telescope it appears a grey (US 'gray') cloud. When I take a time exposure photograph I can see purple and and green clouds. 1. Why is it different? 2. If i were in a spaceship and much closer, would I see the colours one sees in the beautiful Hubble...

Hello all, If there are two planets of identical size but very different mass, why does one have a higher gravity than the other given that space/time is curved by each in the same way? Or does space/time curvature depend not on the size of a body but its mass? TIA Mekon

Given the expanding universe, one fine night astronomers will look up and see the milky way and those galaxies in our local group and nothing else. Is there a grand project we can come up with to present to our descendants in the hope that they can do better with the data than we have been able...

You can't see the CMBR in an ordinary telescope - you need a radio telescope for that - or a TV. Tune it somewhere between the channels and some of the hiss, static and crackle will be the CMBR. At least that's what I've read. The Big Bang is not a great name for it, iit was coined by a fellow...

First post, please excuse my ignorance. If the Universe is closed, then at the end of the expansion, micro gravity eventually pulls all objects together. Black holes absorb more and more stars and whole galaxies and eventually each other until there is just one black hole and no matter left...