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Because of its capacity to be freeze-dried and reconstituted, agar is considered a “physical jelly” (that is, a jelly that sets and melts with temperature changes without needing any additives). This property makes dry agar easy to ship and preserve for long periods of time.5
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Nasa says the earliest the rocket can blast off is 6 February, but there are also more launch windows later that month, as well as in March and April.
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