Sad news… Freeman Dyson, the English-born American theoretical physicist, and mathematician who imagined hypothetical alien megastructure called “Dyson Sphere” died on February 28, 2020. Freeman was 96 years old.
Category Archives: Astronomy
Why the night sky is dark?
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.
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 […]
Five Moon myths – and how to disprove them yourself
Daniel Brown, Nottingham Trent University This year’s first supermoon will potentially grace the sky on February 9. A supermoon is usually defined as the largest full moon possible. This is a very loose definition and roughly means this happens when the full moon occurs within 10% of its closest to Earth. But in reality, supermoons […]
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.
Fastest human-made object: Parker Solar Probe
On January 29, 2020, during its fourth close approach of the Sun, NASA’s Parker Solar Probe reached a top speed of 244,225 mph (393,042 km/h) or 62.28 miles per second (mi/s) (109.18 kilometers per second) and once again became the fastest human-made object ever built. Despite it seems blazingly fast (and actually it is), it […]
Astrophotographer created a spectacular image of the Moon combining 100,000 photos
Astrophotographer Andrew McCarthy created a spectacular image of the Moon’s surface in great detail by combining 100,000 long-exposure photos.
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.”
Proxima Centauri c: how we spotted a potential new planet around the Sun’s neighbouring star
Hugh Jones, University of Hertfordshire Most exoplanets, bodies orbiting stars other than the sun, are too far away for us to be able to send probes to. So it’s no wonder that the discovery of a possible habitable planet around the sun’s nearest neighbour star, Proxima Centauri, a few years ago generated a lot of […]
Betelgeuse: star’s weird dimming sparks rumours that its death is imminent
Daniel Brown, Nottingham Trent University Every season has its characteristic star constellations in the night sky. Orion – one of the most recognisable – is distinctly visible on crisp, clear winter nights in the northern hemisphere. The constellation is easy to spot even in light-polluted cities, with its bright stars representing the shape of a […]
