Origin of the Moon You can watch the summary of this post as video here. Overview Our planet Earth‘s natural satellite, the Moon, is our closest astronomical object. There are several theories to explain the origin of the Moon. While the two terrestrial planets Mercury and Venus do not have any moon orbiting them, Mars… Continue reading Origin of the Moon
Author: rvsundaram
Black Holes
Black Holes Image credit: http://www.nasa.gov/sites/default/files/thumbnails/image/bh_visualization.jpg About the above image: It is a visualization of a black hole and its (hot, thin, rotating) accretion disk formed by the infalling matter spiraling toward the black hole. The disk is distorted because of gravitational lensing. Image credit: NASA’s Goddard Space Flight Center. Overview Can you visualize a… Continue reading Black Holes
Supernovae
Supernova Pic 1. Remnants of Cassiopeia Supernova A (29 Light Years across). Photo credit: Chandra.harvard.edu Watch the video that gives the summary of this post. Overview Supernova is a violent, explosive death of a very massive star. Nova is from the Latin word “novus” which means new, unusual or extraordinary. In 1572, the Danish… Continue reading Supernovae
Origin of Gold
Origin of Gold and other Heavy Elements Click here to watch the summary of this post as video. Photo Credit:Zlaťáky.cz on Unsplash We know that the element gold (AU, atomic number: 79) is a precious, dense, yellow metal. We make jewelries from gold because of its amazing malleable and ductile properties. Electronic industries too… Continue reading Origin of Gold
James Maxwell
James Maxwell and His Discoveries James Clerk Maxwell (1831 – 1879) “From a long view of the history of mankind – seen from, say, ten thousand years from now – there can be little doubt that the most significant event of the nineteenth century will be judged as Maxwell’s discovery of the laws of electrodynamics.” … Continue reading James Maxwell
Soap Bubble
What makes a soap bubble so colorful? What is the physics behind this? What phenomenon paints a soap bubble with such beautiful colors?
Solar system Quiz
An easy quiz on our solar system. Check how much you know about the objects in the solar system. It is not timed.
Astronomy Quiz
An easy quiz on astronomy. Check how much you know in astronomy. The quiz is not timed. You can take as many times as you like.
Optics Quiz
An easy quiz on the topic of Optics. Check your knowledge in Optics. The quiz is not timed. You can take as many times as you like.
The Sun
The Sun is the lone host star of our solar system. How and when was it born? What powers the Sun? What happens when the Sun’s life ends?