askscience

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A bluish aurora-like streak informally called "Steeve" has been recurrently spotted int the night sky of the Canadian prairies - what might it be, and how could this phenomenon be investigated?	8424
Is there any validity to the claim that Epsom salts "Increase the relaxing effects of a warm bath after strenuous exertion"? If so, what is the Underlying mechanism for this effect?	7969
How is it so that several (all?) mammals grow and lose a set of "baby teeth" before growing their final dentition? Why stop at two sets when other vertebrates such as sharks regenerate their teeth constantly?	7960
How did a population of landlocked seals manage to establish itself in lake Baikal, of all places, at an altitude of 450 m and several hundred kilometers from the Nearest coastline???	6573
If the universe had a definite boundary, what would it look like, what would we see?	4862
Hein et al (2017) have explored scenarios for sending a spacecraft to the recently confirmed interstellar asteroid "Oumuamua". What payloads and capabilities would we wish to prioritize on the exploration of this strange and peculiar object?	3390
Banana. We are regularly told that bananas are under threat. Are there other strains of Banana under development, if so how far away are they to commercial introduction and what other measures might be under way to protect this staple crop?	3328
To what extent, if any, is finished concrete such as that found in most urban structures reuseable and recyclable?	2969
Do all galaxies have a very massive object at their center? If so, is it necessarily a black hole?	2657
Now that a piece of wreckage from flight MH370 has been confirmed on Réunion Island, is it possible to use our understanding of direction and speed of currents in the Indian Ocean to narrow down where it likely crashed?	2098

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