Space seeds on their way, slowly

Astronaut Greg Chamitoff is now feeling much better after a week back on earth. Apparently for the first few days on earth after spending a months without gravity you feel like there are sandbags piled up on you when you lie down.

It will be interesting to see how our seeds respond to the same transition. We thought the ionising radiation might have some effect but perhaps the lack of gravity - and the ungainly reversion on return to our weighty planet - will be more important.

It looks it will be some time before the seeds make it back to Mount Annan Botanic Garden. All the cargo has to be carefully unpacked and catalogued before it returns to its owners. This might take a month. And then there is quarantine - getting the seeds from the USA to Australia might be the most arduous part of the journey.