Roger Barlow, University of Huddersfield Why the night sky is dark? It sounds obvious. That’s what night is. The sun has set and when you look up at the sky, it’s black. Except where there’s a star, of course. The stars are bright and shiny.
Category Archives: Earth Facts
This is why light pollution in cities is a very bad thing
Do you remember when did you see a sky full of stars last? It’s been many years for me, I even can’t remember when I saw last. A lot of young people didn’t see even once, because of the light pollution in cities, since they were born in cities and probably never went to the […]
This is why we have Leap Years
Once (almost) every four years, we have a “leap year” which has 366 days instead of 365. Why it is like that? Why we have leap years? JAXA (Former NASA Goddard) Planetary scientist Dr. James O’Donoghue (@physicsJ) explains why we have leap years in his latest video.
Draining Earth’s oceans – amazing animation by the JAXA scientist
The Japanese Space Agency (JAXA) and former NASA Goddard Planetary scientist Dr. James O’Donoghue (@physicsJ) created another amazing video. He showed that what if we slowly drain the Earth’s oceans and see the two-thirds of Earth’s surface (that is currently under the oceans) we don’t get to see. In other words, how our planet would […]
Investigating Overpopulation: The Solutions
Urbanization is just one of the many effects of overpopulation here on Earth, along with the rapid dwindling of the natural environment as a whole. The general consensus across the scientific community is that a number of factors have contributed to global overpopulation. More than 7.7 billion people live on Earth as of 2020, largely […]
A meteor has just been observed in Puerto Rico – Amazing footage
Desireé Cotto-Figueroa, an Associate Professor from the University of Puerto Rico at Humacao (UPRH) Department of Physics and Electronics has just tweeted amazing footage of a meteor over Puerto Rico, saying “Meteor just observed in #PuertoRico. Everyone who saw it please report it here.”
The oldest material on Earth has been found in a meteorite and it is way older than the Solar System!
Scientists have found the oldest material on Earth in a 7 billion-year-old meteorite – a space rock that is way older than the Earth and even older than our solar system! For comparison, the age of Earth is approximately 4.54 billion years, with an error range of about 50 million years. The Sun is about […]
Investigating Overpopulation: The Causes and Effects
A full 20 years into the 21st century, the threat of overpopulation continues to make headlines across the globe. A recent United Nations study determined that the global population, currently sitting at 7.7 billion, will increase to about 9.7 billion by 2050. That equals a 28% population increase, or approximately 82 million additional people every […]
Scale and composition of Earth’s surface
In collaboration with Dr. Christine Houser (@seismodoc), a specially appointed assistant Professor of solid Earth geophysics at the Earth-Life Science Institute in Japan, NASA Goddard Planetary Scientist Dr. James O’Donoghue (@physicsJ) created another amazing animation titled “Scale & Composition of Earth’s surface: Major constituents of the crust, water, and atmosphere” and published on his YouTube […]
How fast you’re spinning?
The Earth rotates at a speed of 460 m/s, which is approximately 1650 km/h (about 1025 mph) at the equator. But, if you’re not living on the equator, you’re spinning slower. Here’s how to calculate your spinning speed.
