Whatever we know about black holes comes from the equations and theories put forward by physicists like Albert Einstein, Stephen Hawking and others. A long standing goal in astrophysics is to directly observe the immediate surroundings of a black hole and test whether the observations match with the predictions. The Event Horizon Telescope (EHT) project […]Read More Six Amazing Facts about the ‘First Image of a Black Hole’
Lets start this article with a fact that might blow your mind: “Our Universe is just 13.8 billion years old but it has a radius of 46.5 billion light years.” What does this mean? Our Universe was created in a Big Bang about 13.8 billion years ago and has been expanding ever since then. The […]Read More Our Universe is expanding… but what is it expanding into?
Out of the total mass-energy content of the universe, regular matter- the matter that makes up stars, planets and people, adds up to less than 5%. The remaining 95% is made up of stuff that we can’t see or detect. Popularly known as dark matter and dark energy, they make up 26% and 69% of […]Read More Is there a fifth fundamental force in the universe?
The concept of gravity was introduced by Issac Newton in the year 1687 AD. Newton described gravity as the force of attraction between objects having mass. Albert Einstein drastically changed this view of gravity when he published his famous general theory of relativity in the year 1916. According to general relativity, gravity is not just […]Read More Why does gravity travel across dimensions?
On 14 March 2018, I happened to come across one of the most shocking news I had ever heard in my lifetime. Stephen Hawking was no more. I immediately posted the news of his demise on my social media handles. The Facebook post was shared by more than 32,000 people which shows how dearly he […]Read More Book Review: ‘Brief Answers to the Big Questions’ by Stephen Hawking
Time travel has always been a part of science fiction movies. Imagine going back in time to see the dinosaurs or traveling to the future to witness the Milky Way-Andromeda collision! Einstein’s Theory of Relativity tells us how ‘speed’ and ‘gravity’ affect time. Time slows down significantly around massive objects like black holes, neutron stars, […]Read More 5 ways to travel back in time
‘Theory of Relativity’ is a generalized term used for two different classes of theories given by Albert Einstein namely special relativity and general relativity. General relativity was originally published by Albert Einstein in the year 1915. Before general relativity, it was believed that gravity is a “force” which acts between objects that have mass. However, […]Read More Theory of Relativity explained in simple words