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[Definr]a physicist who studies stars and galaxy


[Definr]a collection of star systems, any of the billions of systems each having many stars and nebulae and dust


[Definr]The ratio of the volume of void space to the volume of solid substance in any material consisting of void space and solid material, such as a soil sample, a sediment, or a powder.


[Definr]pertaining to the branch of astronomy dealing with the dynamics of universe.


[Definr]he branch of galaxy and stars that deals with the physics of stellar phenomena.


[Definr]the physical phenomenon of radiating energy in the form of waves or particles

dark matter

[CERN]Only 4% of the matter in the universe is visible. The rest is known as....

dark energy

[Definr]A mysterious force that appears to be causing the expansion of the universe to accelerate


[Definr]a process in which something passes by degrees to a different stage (especially a more advanced or mature stage)


covert and involved plotting to achieve your ends.


used in negative statement to describe a situation that has existed up to this point or up to the present time


a measure of the amount of matter contained by a given volume

super symmetric

[]a theory that predicts the existence of heavy to all known particles. it will be tested in the LHC


[]forming a question


[]a space entirely devoid of matter; a state of lowest energy in a quantum field theory


[]the same or similar kind of nature


[]Physics The tendency of particles or bodies of the same electric charge or magnetic polarity to separate.


[]act of increasing (something) in size, volume, quantity or scope

hubble law

[]generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from the observer


[]the rate of speed;increase of speed

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