Global e-Competition on Astronomy and Astrophysics
GeCAA is an online astronomy and astrophysics competition held instead of the cancelled IOAA 2020 by the IOAA international board and Estonian Astronomy Olympiad Committee.
GeCAA is an online astronomy and astrophysics competition held instead of the cancelled IOAA 2020 by the IOAA international board and Estonian Astronomy Olympiad Committee.