How Concerned Should You Be About AY.4.2. Delta Subvariant?
No sooner than you thought all the talk of new COVID variants was over, there’s news of yet another one:…
What is deep learning?
Deep learning is a class of machine learning algorithms that uses multiple layers to progressively extract higher-level features from the…
This spooky looking asteroid attended the Halloween party six years ago!
On October 31, 2015, asteroid 2015 TB145 transited 486,000 km from the Earth’s surface, about 1.27 times the distance that…
What the giant James Webb telescope will see that Hubble can’t
The $10 billion instrument, half the size of a 737 airplane and replete with gold-coated mirrors, will orbit 1 million…
What are the Borromean rings?
Borromean rings are a set of three interlinked, simple closed curves in three-dimensional space. If any one of the three…
G11.2-0.3, a circularly symmetric supernova remnant containing a dense, rotating dead star at its center
When a massive star collapses, the outer layers of the star are destroyed in an extremely energetic explosion. Depending on the…
The Gum nebula
Among the various celestial objects visible from Earth, the Gum Nebula plays a very particular role. Located about 1500 light…
In the sky ghosts exist, but they are not scary!
Mirach’s Ghost is in fact very little scary and due its name solely to its hazy appearance when viewed through…
A jewel box in the skies of the southern hemisphere
This is one of the names by which NGC 4755 is known, a splendid open cluster in the constellation of…
What is a Crystal?
Crystal is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic…