My comment to space missions:
● Manned space missions should all be cancelled in order to protect the health of the astronauts as well as the money of the taxpayers.
● The search for a "Second Earth" in other solar systems is a sheer waste of money, because humans will never be able to get there.
● Only the exploration of our own Solar System by better telescopes and unmanned research robots makes sense!
Examples for reasonable spaceflight:
| Dawn 2007.09 takeoff from Earth 2011.07 orbit around Vesta 2015.03 orbit around Ceres 
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Ceres (Ø = 946km) with the crater Occator (Ø = 90km) Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA The photo is taken from the website Dawn Mission (NASA) | |
| New Horizons 2006.01 takeoff from Earth 2007.02 swing-by at Jupiter 2015.07 fly-by at Pluto 
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Pluto (Ø = 2374km) on July 13th, 2015 from a distance of 450000 km Image credit: NASA/Johns Hopkins University Applied Physics Laboratory The photo is taken from the website New-Horizons-Mission (NASA) | |
| Rosetta/Philae 2004.03 takeoff from Earth 2011.06-2014.01 hibernation 2014.09 orbit around 67P/CG 2014.11 Philae lands on comet 
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Comet 67P/CG "Churyumov-Gerasimenko" (Ø ca. 4 km) Image credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA This photo from August 3rd, 2014 was taken from portal of ESA | |