My comment to space missions:

● The immensely expensive manned space missions should all be cancelled in order to protect the health of the astronauts as well as the money of the taxpayers.
● Also the search for a "Second Earth" in other solar systems is a waste of money, because the immense distance to them makes them unreachable for us, forever.
We should use all money available for spaceflight to explore our own Solar System by telescopes, unmanned probes, and research robots.

Examples for reasonable spaceflight:

Dawn
2007.09 takeoff from Earth
2011.07 orbit around Vesta
2015.03 orbit around Ceres
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

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

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