While winter 2022 has been seriously cloudy, I did get my first chance to capture the beauty of Taranaki Maunga under the stars. What made this even more special was that we were sitting watching sunrise from the top earlier that same day!
Neptune & Triton. Imaged: Monday 14th August 1989 to Sunday 3rd September 1989. Closest approach: Friday 25th August 1989. Here are several views of Neptune and Triton obtained by the already then ageing Voyager 2 spacecraft. Despite Voyager 2's age, (was over 12 years since launch) the spacecraft performed magnificently and to this date, these are the best views of Neptune and Triton, and will be for quite some time yet. Neptne orbits our Sun at an average distance of 30.1 times the Sun to Earth distance or 4.515 Billion KM / 2.804 Billion miles, once every 164 years & 281 days. Neptune has a mass of 17 times that of Earth, has a mean diameter of 42,244 KM / 30,580 miles and rotates on it's axis once every 16 hours and 7 minutes. Neptune has a deep atmosphere, consisting of 80% Hydrogen, 18% Helium, 1% Methane (gives Neptune the deep blue colour) and 1% trace gases like Ammonia, Nitrogen, etc. Neptune has an average global density of 1.68 times that of water, ...
Mercury. Friday 1st October 2021, the BepiColombo spacecraft passed Mercury at a distance of 199 KM / 123 miles, the engineering cameras and many of the scientific instruments were used to gather new images and data on The First Rock from the Sun. Fantastic images, very high quality. The first Hermean science has been released from this encounter from the science instruments used on board the BepiColombo spacecraft. The PHEBUS / Probing of Hermean Exosphere By Ultraviolet Spectroscopy, Ultraviolet Spectrometer sampled the extremely tenuous 'atmosphere' or Exosphere of Mercury. Detection of Hydrogen & Calcium were made as the BepiColombo spacecraft exited the deep shadow of Mercury. Whilst both had been observed before by the NASA / JHU / APL MESSENGER / MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft during the hugely successful orbital mission, the PHEBUS on BepiColombo was able to determine that the exosphere was virtual...
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