Search Results for: astronomy

International Year of Astronomy

This year has been declared as the International Year of Astronomy. It marks the 400th anniversary of Galileo’s first astronomical observations using a telescope and the publication of Johannes Kepler’s Astronomia Nova (which described the fundamental laws of planetary motion). … Continue reading

A perspective of distances in space

This video has been making the rounds lately. It is a view of the sun, the camera moving back at the speed of light – illustrating in realtime, the journey of a photon of light emitted from the surface of the … Continue reading

Today’s fantasy, tomorrow’s possibility

If you haven’t watch it yet this video, Wanderers,  is a must. And it is well worth watching full screen. It’s a science-inspired short film imagining human exploration of our solar system. The voice-over is very recognisable – Carl Sagan reading … Continue reading

Unusual photo of Moon and Earth.

Here’s a photo of the earth you don’t often see. Nor is the view of the moon familiar. The Chinese test vehicle Change’5 took this photo as it swung around the moon before returning to earth.  So we see the unfamiliar far side … Continue reading

The universe – it is bigger than you think

I am spending some time dealing with family business so I am reposting some of my past book reviews over the next few days. These could be useful with Christmas coming up. I enjoyed Marcia Bartusiak’s book for two reasons. … Continue reading

The Galileo fallacy and denigration of scientific consensus

It’s one mark of the significance of Galileo to scientific progress that many myths about him exist even today. He seems to still be a focal point in  present day debates between science and religion, pseudoscience and magical thinking. But … Continue reading

A new Cosmos

Here’s something to look forward to. Next year a new version of the classic series Cosmos will be available. The trailer below gives and idea of its likely quality – watch it full screen. the quality is great. Official Trailer … Continue reading

Historians and sociologists just as human as scientists

This great Sidney Harris cartoon reminds me of the Big Bang Theory scene where Sheldon and Leonard end up wrestling during a conference presentation by Leonard. It’s also a handy antidote for anyone with an idealistic picture of scientists and … Continue reading

Agreement polar ice sheets are melting

Many climate scientists felt the conclusions on effects of global warming in the 2007 IPCC review were too conservative. One reason was the estimation of likely melting of ice sheets and its effects. Problem was that there was insufficient knowledge … Continue reading

Time for philosophical honesty about Darwin

Credit: The Teaching Company John S. Wilkins, at the Evolving Thoughts blog, has a nice short article, Why is Darwin’s theory so controversial?, on the so-called “controversies” around Darwin’s theories. I think he nails it. He shows that the usual tired … Continue reading