Effects of Large Satellite Constellations on Astronomy

  Many of you will have seen the images back in 2019 which showed  long ‘trains’ composed of up to sixty SpaceX Starlink satellites crossing the sky in a straight line. These pictures hit the headlines not only because of the number of satellites, but because of their brightness. A 'train' of SpaceX Starlink satellites,… Continue reading Effects of Large Satellite Constellations on Astronomy

The end of the International Space Station?

There have been stories in the news recently that NASA intend to deorbit the International Space Station (ISS) in 2031.  They are largely based upon a recent NASA report outlining the future of the ISS. This report makes interesting reading and describes how NASA will transition away from the ISS towards commercial space stations (which… Continue reading The end of the International Space Station?

James Webb Telescope

On 18 December a Ariane 5 rocket will take off from the  Guiana Space Centre in French Guiana, aboard it will be the $12 billion James Webb Space Telescope (JWST) - the most expensive scientific instrument ever launched into space. In this post I’ll talk about this remarkable telescope and the mission to deploy it.… Continue reading James Webb Telescope

Congratulations Blue Origin!

A week is certainly a long time in crewed spaceflight! Following Richard Branson’s trip to “the edge of space” on Sunday 11 July,  Jeff Bezos went one step further on July 20.  He made a short journey to space, in the first crewed flight of his Blue Origin rocket ship, New Shepard.  As the spacecraft… Continue reading Congratulations Blue Origin!

Congratulations Virgin Galactic

Great news from Virgin Galactic on Sunday. Although according to the widely used definition, their spacecraft didn’t quite get into space. Most international authorities define that space begins at an altitude of 100 km (the Karman line), whereas VSS  Unity reached an altitude of 86 km, but a fantastic achievement nevertheless !!. For those who… Continue reading Congratulations Virgin Galactic