Thread: 1/
![Title slide: Space astronomy & the impact of megaconstellati](https://pbs.twimg.com/media/EcBMbpWWAAECtaH.jpg)
![Stock illustration of a low-Earth orbit network](https://pbs.twimg.com/media/EcBMbpcWsAA2Mui.jpg)
![Timelapse photo showing a train of Starlink satellites passi](https://pbs.twimg.com/media/EcBMbpgWsAMFJHS.jpg)
![Field-of-view of DECam on CTIO 4-m with trails due to the pa](https://pbs.twimg.com/media/EcBMbpjXQAESUEm.jpg)
cont.
3/
![Three Iridium flares in one image incl Iridium 33, then anot](https://pbs.twimg.com/media/EcBPm-YX0AM_1a-.jpg)
![Artist impression of the Russian military satellite Kosmos-2](https://pbs.twimg.com/media/EcBPm-gX0AIxOop.jpg)
![Point of collision between Iridium 33 & Kosmos-2251 & immedi](https://pbs.twimg.com/media/EcBPm-gX0AQGOMC.jpg)
![Diagrams showing the spread in apogee & perigee of debris fr](https://pbs.twimg.com/media/EcBPm-bWoAEFYGt.jpg)
cont.
4/
![Images showing one of the solar array wings of ESA's Sentine](https://pbs.twimg.com/media/EcBQdx9XQAE6trl.jpg)
![Image of ESA's Aeolus satellite, which had to be moved to av](https://pbs.twimg.com/media/EcBQdx7XgAEcCtn.jpg)
![Diagram showing the European Space Agency's solar system exp](https://pbs.twimg.com/media/EcBQdx1WkAICxdk.jpg)
![Selection of ESA planetary missions to Mercury, Mars, & Jupi](https://pbs.twimg.com/media/EcBQdx2XQAAN9k0.jpg)
cont.
5/
![Four ESA/international solar missions, two in low-Earth orbi](https://pbs.twimg.com/media/EcBRQjkWAAIBvrj.jpg)
![Four ESA science missions with highly elliptical orbits that](https://pbs.twimg.com/media/EcBRQjjWoAAQIkP.jpg)
![Diagram showing the European Space Agency's cosmic observers](https://pbs.twimg.com/media/EcBRQjeXkAAiD6-.jpg)
![Four ESA/international astronomy missions (Gaia, JWST, Eucli](https://pbs.twimg.com/media/EcBRQjkWsAEhdsb.jpg)
cont.
6/
![Two ESA/international astronomy missions (HST & CHEOPS), one](https://pbs.twimg.com/media/EcBSJM4WAAAl1wZ.jpg)
![A sketch showing some ESA/international missions for Earth o](https://pbs.twimg.com/media/EcBSJM6X0AEMbmA.jpg)
![The same low-Earth orbit sketch now with the addition of som](https://pbs.twimg.com/media/EcBSJNDWsAMKJ7W.jpg)
![Picture showing the NASA/ESA Hubble Space Telescope in low-E](https://pbs.twimg.com/media/EcBSJNCXYAABQKc.jpg)
cont.
7/
![Diagram showing the history of the orbital altitude of the H](https://pbs.twimg.com/media/EcBTBv5WkAA-A8v.jpg)
![Images showing examples of satellite trails observed in Hubb](https://pbs.twimg.com/media/EcBTBvyWoAEPn1U.jpg)
![One very bright, out-of-focus satellite trail in a Hubble Sp](https://pbs.twimg.com/media/EcBTBvzXkAAtl9s.jpg)
![More examples of satellite trails see in Hubble Space Telesc](https://pbs.twimg.com/media/EcBTBvyXkAIp1y5.jpg)
cont.
8/
![Example satellite trails being seen by the ESA/Swiss CHEOPS](https://pbs.twimg.com/media/EcBUMYcXgAE8RvI.jpg)
![Example satellite trails seen by NASA's WISE space telescope](https://pbs.twimg.com/media/EcBUMYdXgAIOXxN.jpg)
![Artist impression of the Chinese Space Station Telescope, a](https://pbs.twimg.com/media/EcBUMYeX0AYA_A9.jpg)
![Slide discussing some of the light trail & collision/debris/](https://pbs.twimg.com/media/EcBUMYdXQAU-jJc.jpg)
Final slides
9/
![Discussion of the issues faced by LEO space science missions](https://pbs.twimg.com/media/EcBVRdrWoAEwVqC.jpg)
![Slide of conclusions, recommendations, & observations from m](https://pbs.twimg.com/media/EcBVRdsWkAMzSPH.jpg)
![Closing slide of my talk, including a list of people who wer](https://pbs.twimg.com/media/EcBVRd0XYAAQfyE.jpg)
10/10
Keep Current with Mark McCaughrean
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