Are We Alone In the Universe? Picture credit: https://cdn.pixabay.com Watch video which provides the summary of this post. “Eternal silence of these infinite spaces frightens me.” Blaise Pascal, French philosopher and mathematician. Overview One of the unsettled questions, in the scientific community as well as in the mind of every curious person, is: are… Continue reading Are We Alone
Category: Astronomy
Posts on Astronomy
Why Not Eclipses Every Month
Why Eclipses Don’t Occur Every Month Watch this video which provides the summary of this post. Solar Eclipse Lunar Eclipse Eclipses As we know, lunar eclipses occur when the Earth’s shadow falls on the Moon as the Earth comes between the Sun and the Moon. This configuration occurs on a full moon day. And solar… Continue reading Why Not Eclipses Every Month
Moon Near Horizon
Moon Near Horizon Picture credit: https://live.staticflickr.com Watch this video which provides summary of this post. Overview On a full Moon Day, in the evening, we often enjoy the breathtaking beauty of the rising full Moon in the eastern sky. As it rises from the horizon, it appears so beautiful and big. However, after a while,… Continue reading Moon Near Horizon
Origin of the Moon
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
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
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.
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?