These are some of my cosmology posts
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Easter – 21 April 2019
In 2019 , for the majority of people 21 April was Easter Sunday, one of the most important dates in the Christian calendar. Although Easter is a is a festival celebrating the resurrection of Jesus Christ from the dead, it is also widely marked by non-Christians in the UK, particularly as there are two very welcome public holidays on…
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An amazing discovery
For those who missed my post on 1 April 2016 here is a re-blog of the amazing discovery of the first intelligent alien life. —Original post below News is just reaching us of the most amazing astronomical discovery which I am ever likely to experience in my lifetime, one which I never thought I would see. As regular…
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Solar energy
15 December 2025 This orginal post has been revised and updated. However, a new version is at Opportunities for solar energy In this post I’ll talk about some of the science behind this interesting fact and I’ll also discuss how solar energy is likely to become more important to us in the future. The facts…
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American crewed spaceflight in 2019
Since the retirement of the Space Shuttle in July 2011, America has been unable to put any astronauts into orbit around the Earth. Instead, it has been in the difficult situation of having to rely on the Russian Soyuz spacecraft to ferry astronauts to and from the International Space Station (ISS). This situation may change…
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21 January 2019 lunar eclipse
On the night of 20/21 January 2019 there will be a total eclipse of the Moon, which will be viewable from many areas of the world. This will be worth making the effort to see, especially for my readers in the western USA and Canada for whom it will occur at a sociable hour. The…
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Chinese Moon missions
Like many people, I was very excited to hear the news on 3 January that the Chinese spacecraft, Chang’e 4, had landed as planned in the Von Karman crater on the far side of the Moon. Chang’e 4 in the Von Karman crater. The crater lies in the South Pole-Aitken basin on the far side of…
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What altitude does space begin?
Virgin Galactic plans to resume spaceflights for wealthy customers at around $600,000 per flight, lasting 2.5 hours with only 5 minutes above 80 km. The definition of the boundary of space varies, with the Karman Line at 100 km supported by the FAI, while the FAA considers it at 80 km.… Continue reading What altitude…
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December 21 2018 – the solstice
The winter solstice, occurring around December 21, marks the shortest day in the Northern Hemisphere. This phenomenon’s significance is tied to early human cultures, illustrated by Stonehenge, which aligns with solstice events. Celebrations continue today, especially among groups like Druids and Pagans, honoring the gradual return of sunlight.… Continue reading December 21 2018 – the solstice…
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e-book on Venus from Explaining Science
Updated 7 December 2025 Venus is, the planet closest to the Earth in size and internal composition, and the brightest natural object in the sky after the Sun and the Moon. This completly revised e-book covers most of the main areas about Venus. To find out more click on A Short Guide to Venus e-book…
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Soyuz MS-11
On 3 December 2018 a Soyuz spacecraft will take off on a mission to transport three astronauts to the International Space Station (ISS). The new crew will be ISS Expedition 58 and will stay at the station for six months and their arrival will allow the current ISS crew to return to Earth. Mission patch…
Explaining Science 