Starship Asterisk*

It seems as if the spiral arms are not all in the same plane. This is emphasised by the appearance of a fainter 'Northern' arm which suggests it is pointing away from us. Is this an illusion or can we measure the 3D shape?

Harry

The link doesn't work. If it relates to the University of Missouri can you provide more information please.

I suppose some amount of radiation is emitted from all planets that have a hot interior. It is thus fair to say that Neptune emits more radiation than it receives but I think a bit misleading to classify the radiation as light and to suggest it is unique to Neptune.

Got me too!

If the blue disc in the galactic plane comprises young stars, presumably the brightness seen extending many times the thickness of the central dust lanes & perpendicular to the galactic plane arises from other stars in NGC5866 unresolved in this photograph. The 60 000 light year dimension (incor...

Supernatural 'explanations' have no place in this forum. If you want to bring in a god concept it must comply with natural law. This is science.

It's a diagram - a graph- and not a picture. A picture can only represent something at a particular instant of time. In this diagram, time is illustrated as increasing left to right.

The gravitational influence of one galaxy on the other has been sufficiently strong so as to significantly change the direction of forward motion and yet the Tadpole has retained its basic spiral shape with only a small portion drawn out to form the 'tail'. It is difficult to figure out the shape of...