Cosmos and Spacetime

5 stories in this subject

The famous astronomer Carl Sagan once said, "The cosmos is all there is and all that will ever be". Indeed, we live on a tiny speck in our cosmos but there is so much more, unimaginably more, mysterious things out there that we are only now beginning to explore. Here, you'll find interesting stories from all over the cosmos, as viewed from Earth.

In physics, especially in cosmology, scale tells how one can understand a phenomenon or natural object. © Hermano Farias.

universe · Cosmos · 24 Jan 2022

The Simplicity of Everything

Hermano Farias

A concise introduction to cosmology and the theory behind it.

Numbers and infinity have a profound relation. © Sunaina Rao

mathematics · Cosmos · 15 Dec 2021

Somebody said infinity?

Hermano Farias

Can the concept of infinity be properly understood, discussed and compared? This question may sound purely philosophical, but it isn’t in fact. Here I discuss infinity a little.

The DART spacecraft aims to collide with a small asteroid in a binary asteroid system. By colliding, scientists hope to push the asteroid slightly to change its orbit. This test will help scientists prepare planetary defence tools against any future threats caused by asteroids on collision course with Earth. Image created at FROMTBOT using materials taken fromNASA/Johns Hopkins APL.

asteroid · Cosmos · 27 Nov 2021

DART spacecraft launched and on collision course with an asteroid

Devadas Vivek

The aim is to test the idea that we can push an asteroid away by bumping into it, in preparation for defence against any future asteroid hazards.

2021 PH27 is a small asteroid of just around 1 kilometer in diameter orbiting the sun within the Earth's orbit. This picture of an asteroid is only for representation.

asteroid · Cosmos · 24 Aug 2021

Astronomers Discover Rare "Interior Earth" Asteroid Zipping Around the Sun

Devadas Vivek

The asteroid, named 2021 PH27 takes just 113 Earth days to complete its orbit around the sun making it the fastest-orbiting asteroid in our solar system.