DMPQ: Define- Comets, Dark matter, Dark energy and Fundamental particle (Science)

Q.  Comets

Ans:   Comets originate in outer solar system and are formed of cosmic snowballs of frozen gases, rock and dust that orbit the sun. When a comet’s orbit bring it close to the sun ,it heat up and spewn dust and gases into a giant glowing head larger than most planets.


Q.  Dark matter

Ans:   Roughly 80% of the mass of the universe is made up of material that scientist cannot directly observe. This is called dark matter. Dark matter is completely invisible to light and other forms of electromagnetic radiation, making dark matter impossible to detect.


Q. Dark energy

Ans:   Dark energy is a hypothetical term used for a kind of energy that exerts a negative, repulsive pressure, behaving like the opposite of gravity. Like dark matter dark energy is not directly observed, but rather inferred from observations of gravitational interactions between astronomical objects.


Q.  Fundamental particle

Ans:   All fundamental particle can be divided into one of two categories, fermions and bosons. Particles that make up matter called fermions eg electrons, protons, leptons, quarks. Particles that carry force are called Boson. Eg Photons, 4He atoms, gluons, W bosonetc.


RAS-RTS FREE Notes brings Prelims and Mains programs for RAS-RTS FREE Prelims and RAS-RTS FREE Mains Exam preparation. Various Programs initiated by RAS-RTS FREE Notes are as follows:- For any doubt, Just leave us a Chat or Fill us a querry––

Android App for RAS Prelims and Mains 

-Rajasthan GK (History, Geography, Economy and Polity)
-RAS Prelims Notes
-RAS Current Affairs
-Daily Mains Practice Questions (DMPQ)
-Daily Prelims Practice Questions (DPPQ)
-Mains Topic wise Notes for All RAS GS Papers

Install Now on

Never Miss any RAS Updates