SPACE exploration

Dark matter and Energy Well we all know that our universe was born 14 billion years ago , after the big bang explosion...According to the great physicist stephen hawking universe have began from a singularity...And there were two main hypotheses about the beginning of our universe...  which were the big bang theory and the steady state theory.. I will explain about these both hypotheses in my upcoming articles....Now lets focus on our main topic.... What is dark matter ? The observable universe has a radius around 47 billion light years...Due to the expansion of the universe this might get minimized in the next billion years...The average temperature of the universe was 2.7K ..Our universe was made of three major substances....And they were Visible matter , Dark matter and Dark energy.... Astronomers believe that 69% of the universe was about dark energy and 26% was dark matter....Only 5% represents what we observe in the universe as normal matters....Black holes , stellars , comets ,

  Members of the   STELLAR fam .... Night sky observation was one of the most fascinating events for a space lover...we see plenty of stellars in our night sky while observing from our naked eye...But if use a telescope for our observation we can see more enchanting events...        Modern astronomy and astrophysics history goes around 400-500 years and during that time scientist have been discovered over millions of stars through telescopes....but unfortunately we can only visible around 4000 stars from our naked eye due to light pollution... So because of this vast discoveries of stars scientist wanted to categories them into groups by using its characteristics....So as a result of that "hertzsprung - russel diagram" was created by the scientists named  Ejnar hertzsprung and henry russel in the 20th century....  The H-R diagram ( hertzsprung - russel diagram ) provides valuable info about stellar evolution....By studying the position of a star in the diagram scientist were

 The intriguing           supergiant...........    Orion star pattern also named as "the hunter" pattern has been recognized as one of the most significant and enchanting views in the night sky.....we can vision this curios star pattern clearly from december to march..... But if you were interest in astronomy , astrophysics etc you might know that orion star pattern have won the attention from all over the scientific community for several reasons...But the main reason behind this great attention was caused by a supergiant star named as " BETELGEUSE "  As you all know the above star pattern named as the " Orion"  star pattern.... orion star pattern was formed by plenty of stars...But mainly built up by 10 stars named as .....Alnilam , Alnitak , Bellatrix ,  Betelgeuse , Hatysa , Meissa , Mintaka ,  Rigel ,  Saiph and Tabit....But the star named as " betelgeuse " has become a controversial topic among the scientifc  community for several years...