John D. BarrowW
John D. Barrow
GalileuszW
Galileusz
Stephen HawkingW
Stephen Hawking
David Levy (astronom)W
David Levy (astronom)
Margherita HackW
Margherita Hack
Martin ReesW
Martin Rees
Carl SaganW
Carl Sagan
Neil deGrasse TysonW
Neil deGrasse Tyson