Study Point

  Every star you see in the night sky is bigger and brighter than our sun. ... You can't see millions of stars on a dark night. ... Red hot and cool ice blue – NOT! ... Stars are black bodies. ... There are no green stars. ... Our sun is a green star. ... Our sun is a dwarf star. ... Stars don't twinkle.

10 Crazy Facts You Didn't Know About Space There is so much about space, our solar system, and the galaxy that we still don't know!  Space is vast. With billions of galaxies and stars, and planets in our own solar system yet to be fully explored or understood, scientists' knowledge of space is always evolving.  There are, however, some really cool things we know about space right now!  We've compiled a list of what we think are ten stellar facts that we hope you'll think are out of this world!   1. SPACE IS COMPLETELY SILENT There is no atmosphere in space, which means that sound has no medium or way to travel to be heard.  2. THE HOTTEST PLANET IN OUR SOLAR SYSTEM IS 450° C. Venus is the hottest planet in the solar system and has an average surface temperature of around 450° C. Did you know that Venus isn't the closest planet to the sun?  That is Mercury.  You would think that Mercury would then be the hottest, but Mercury has no atmosp...

  Life   is a characteristic that distinguishes   physical entities   that have   biological processes , such as   signaling   and   self-sustaining   processes, from those that do not, either because such functions have ceased (they have   died ), or because they never had such functions and are classified as inanimate. Various forms of life exist, such as   plants ,   animals ,   fungi ,   protists ,   archaea , and   bacteria .   Biology   is the science that studies life. There is currently no consensus regarding the definition of life. One popular definition is that  organisms  are  open systems  that maintain  homeostasis , are composed of  cells , have a  life cycle , undergo  metabolism , can  grow ,  adapt  to their environment, respond to  stimuli ,  reproduce  and  evolve . Other definitions sometimes include non-...

 Launching our first QNA on our blog, please ask relevant questions down the comments below with name or fill the form ASK QUESTIONS Good luck from SAI GROUP

  Plasma   (from   Ancient Greek   πλάσμα ​  'moldable substance' [1] ) is one of the   four fundamental states of matter , first systematically studied by   Irving Langmuir   in the 1920s. [2] [3]   It consists of a gas of   ions   – atoms or molecules which have one or more orbital electrons stripped (or, rarely, an extra electron attached), and free   electrons . Plasma can be artificially generated by heating a neutral gas or subjecting it to a strong  electromagnetic field . The presence of free charged particles makes plasma  electrically conductive , with the dynamics of individual particles and macroscopic plasma motion governed by collective electromagnetic fields and very sensitive to externally applied fields. [4]  The response of plasma to electromagnetic fields is used in many modern technological devices, such as  plasma televisions  or  plasma etching . [5] Depending on temperature a...

  An   atom   is the smallest unit of ordinary   matter   that forms a   chemical element . Every   solid ,   liquid ,   gas , and   plasma   is composed of neutral or   ionized   atoms. Atoms are extremely small, typically around 100  picometers   across. They are so small that accurately predicting their behavior using   classical physics —as if they were   tennis balls , for example—is not possible due to   quantum effects . Every atom is composed of a  nucleus  and one or more  electrons  bound to the nucleus. The nucleus is made of one or more  protons  and a number of  neutrons . Only the most common variety of  hydrogen  has no neutrons. More than 99.94% of an atom's  mass  is in the nucleus. The protons have a positive  electric charge , the electrons have a negative electric charge, and the neutrons have no electric charge. If the...