Within the 65 years since Sputnik 1 was launched in 1957, the variety of synthetic satellites in orbit has been growing. Within the final two years, the variety of satellites has doubled, largely due to the massive “constellations” launched by firms equivalent to SpaceX.
The variety of satellites has a detrimental affect on astronomical observations, each with skilled telescopes and by beginner astronomers. Dr Meredith Rawls, from College of Washington, is planning observations with the Vera Rubin Observatory, whereas Professor Andy Lawrence is a Regius Professor on the Royal Observatory Edinburgh. With forecasts indicating as much as 100,000 satellites in a matter of years, a 20-fold enhance on in the present day’s numbers, there may very well be critical implications for astronomers world wide.
However what has led to this enhance in satellites? Dr Moribah Jah, co-founder and Chief Scientist at Privateer House, explains why there are such a lot of satellites being launched, and what the dangers are each for satellites and down right here on Earth. There are proposed options, however they require geopolitical collaboration.
Additional afield, this month noticed the primary pictures of Sagittarius A*, the supermassive black gap on the centre of our galaxy. Edward Gomez discusses the implications of the detection, and what it’d inform us in regards to the evolution of galaxies.
00:00 Sagittarius A* black gap picture
08:40 Meredith Rawls and Andy Lawrence
28:10 Moribah Jah
An prolonged version of an authentic broadcast on 2nd June 2022 as a part of Pythagoras’ Trousers on Radio Cardiff.