Recent content by S.Vasojevic

Try to imagine or define space, time or spacetime without putting at least two particles in it. It can't be done! Quest for ultimate supervisor of nature is doomed to fail. What ever answer you come up with - it will not be true. Many times repeated but true - only place where you will...

Who built architects house?

Yes it is. Wiki or google 'cosmological redshift', and read Ned Wright's pages (link that Constantin gave). You can also search through PF's cosmology forum, there are good threads about this.

There are few things that are wrong with this picture. First black tail has almost parallel edges, and looks like it is solid. Second, tip appears to be self illuminated with unequal temperature across its surface. Third, 'stars' don't look quite right. Dotancohen, I think that it would be...

Sorry, my bad.

That is not space station unless they radically changed the design recently. Anyway that image is not appearing to be of astronomical origin. To me it looks like light match being fired. But it could be anything.

That would be 74 (km/sec)/Mpc (megaparsec). Meaning that further is galaxy it is receding faster.

I agree, but then it is illuminated by the sun, not by it's own radiation. And again it is spherical. With little imagination you can produce image like this in your room. Until OP provide us with better resolution, or some info, we can't tell. Maybe someone else have seen this image and knows...

Edit: if you mean meteorite in Earth's atmosphere, then it would have fire trail, plus image would have to be exposed very shortly in order to get sharp image of meteorite, and then there would be no stars in the background.

In that case it is going directly towards sun, because trail is at the same angle as light that is shining on it. I think that trail is due to the incident light from the source being blocked. And it is pretty much spherical. As Ich said it could be anything, even microscopic.

Better post a link to tiff.

Mercury?

As Phyisab pointed, it is about how much energy you can 'carry' on a space ship, not about mining the antimatter from nature. With antimatter you will get engines with highest specific impulse possible. Problem of puting that energy to use remains, because it comes as gamma rays, but...

We are here, and constants are what they are. If they were different there would be nobody to measure them or talk about them. Other than that your question is not even metaphysical. Is it possible that there is (are) some intelligent entity existing on completely different scale or plane then...

When matter and antimatter annihilate all the mass is converted to energy. This makes antimatter the most efficient fuel possible. Mass of the fuel is critical for space travel, so it also makes antimatter ideal fuel for space travel. Just to give you some idea of numbers: you can match...