Probably you don't know

  Earth atmosphere wasn't   like that amount of oxygen present today, about 3.5 billion years ago earth atmosphere have only Nitrogen carbon dioxide and methane and oceans full of anaerobic organism including cyanobacteria ,after  cyanobacteria floats in the ocean and able to photosynthesis  with the help of sunlight and carbon dioxide produce their own energy and expelled oxygen to atmospher after the population growth of bacteria increase which leads to oxygen level high which causes death of other organisms around 2.5-2.1  cooling of earth forms ice age and temperature falls and up varied then , aerobic organism comes to play cause decrease the oxygen level so that the level of oxygen rise and fall and finally brings to 21% that we have today after that cyanobacteria swelled by a microbe so that the microbe itself produce energy by the help of cyanobacteria later it's give way to plant cell  Now we are calling this cyanobacteria as chloroplast The d...

  We all know that moon has no atmosphere but at near the pole hematite (Iron oxide-Rust) is found by chandrayan-1 2008 mission by ISRO (INDIAN SPACE RESEARCH ORGANISATION) Shows the data The blue colour show ice presents at the poles the red orange colour show that is hematite. Hematite   Hematite is a oxides of iron generally rust. Rust is formed only when iron is reacted to oxygen and presence of moisture in air or water which leads to corrode How hematite formed in Airless moon Scientist believe that reason for rust  is First Hydrogen ion in form of plasma from sun's solar wind act as a reducer in moons surface but when moon orbiting earth at point it crosses earth magnetotail in earth magnetism there may be possible for oxygen may expell from the atmosphere may have chance to react with moon surface it mostly oocur when earth and moon is completely face each other where earth blocks all the solar wind to moon at the time oxidation may happen Another reason  dust...

A habitable planet found  near our star system around 4.2 light year apart, a star system called Alpha centauri system. This system has 3 stars namely Alpha centauri-A , Alpha centauri- B  and Alpha centauri- C or proxima centauri Alpha A- B are twin stars and proxima centauri is dwarf star a planet revolves it called proxima centauri- B, this planet lies in habitable zone and yet it has a possibility for life but this planet is 4.2 light years away even it is the closest star to earth but the distance is high 24 trillion miles away How far it is For Example If we travel to proxima-B with the help of NASA voyager 1 spacecraft which is moving at a speed of 38,000 miles per hour it will take 70,000 years to reach this planet is close to its star probably it has a chance of tidal locking which means one side of the planet face is always day and another side dark night always there is no day night cycles the habitable zone in the planet is at the Twilight zone w...