A radio galaxy whose lobes are swept back as if forming a tail ...

[roselinechinyere27m]

A radio galaxy whose lobes are swept back as if forming a tail probably indicates
 
  A) evidence for intergalactic matter.
  B) there must be another galaxy nearby.
  C) the galaxy is about to evolve into a spiral.
  D) the galaxy is moving towards Earth.
  E) the galaxy is isolated, not part of a cluster.

Question 2

In the proton-proton cycle, two positrons are produced. What more familiar particles are they similar to, and how do they differ?
 
  What will be an ideal response?

[jointhecircus]

Answer to Question 1

A

Answer to Question 2

Positrons are anti-electrons, made of antimatter, and with a positive charge instead of the negative charge of normal electrons.

[roselinechinyere27m]

Thanks

[jointhecircus]

Welcome