Category Archives: Science

You probably have already seen the fabulous image of the black hole in the center of our Milky Way galaxy, published on May 12th 2022. The Event Horizon telescope team achieved an unbelievable milestone in observational astronomy one again, the first one being the picture of the black hole at the center of galaxy M87.Continue reading “Sagittarius A* Image”

The cosmological constant went from being called Einstein’s biggest blunder to a fundamental field of research in contemporary physics. Nowadays, we think of it as a form of energy that opposes the pull of gravity and makes the expansion of the universe accelerate. However, the story of how it came to be like this isContinue reading “Cosmological Constant”

When we look at a map of the galaxies, we can find that they are not randomly distributed across the universe. Instead, they form in large clusters, which are part of even larger superclusters, of which they are around 10 million. Nevertheless, due to careful analysis of mass distribution in galaxies, astrophysicists have determined thatContinue reading “Galaxy Filaments”

The world of general relativity is a full of valleys, undulations and holes. Light, as any type of matter, gets affected by the curvature of spacetime and bends around objects with a large gravitational field. We see this effect when we look at the sky, some distant galaxies become distorted and unrecognisable. This also actsContinue reading “Gravitational Lensing”

If you have ever seen the northern lights (aurora borealis), you have probably wondered where they originate from. It turns out, they are a stunning visual demonstration of the Earth’s magnetic field interacting with cosmic rays. The magnetic field is estimated to a have originated around 3.5 billion years ago based on analysis of AustralianContinue reading “The Magnetic Field of the Earth”

The detection of gravitational waves by the LIGO and Virgo groups announced in 2016 was one of the biggest experimental breakthroughs in recent physics. Not only was it direct evidence for a prediction made all the way back in 1916 by Einstein, but also was the first observation of a binary black hole merger. ButContinue reading “Detecting Gravitational Waves”

Our Sun is the source of all useful energy on Earth. It is absolutely necessary for life. It’s a gigantic nuclear fusion reactor that uses hydrogen as fuel. It is the center of the Solar System, around which all the other planets rotate. But, how does it really work? Structure Most scientists divide the SunContinue reading “The Sun”

Dark matter and energy are fascinating concepts that capture the imagination of every astrophysicist. They have not yet been observed directly, but they impact a lot of the processes we take for granted. Without them, galaxies would fly apart and possibly would not have formed. They account for 95% of the total mass-energy composition ofContinue reading “Dark Matter and Dark Energy”