In February 2005, it was announced that the Planetary Fourier Spectrometer (PFS) on the European Space Agency's Mars Express Orbiter had detected traces of formaldehyde in the atmosphere of Mars.
U veljači 2005. obznanjeno je da je Planetary Fourier Spectrometer (PFS) orbitera Mars Express Europske svemirske agencije otkrio tragove formaldehida u Marsovoj atmosferi.