They are not from Now

Flashing strobes,
speed of light,
unidentified.
They swirl, they fly, they even swim;
unidentified.
Are they from this planet?
Many care to ask,
they are silenced though.
They do think about them,
very much do they think about them,
the unidentified.
Where are they from,
they might ask.
They are wrong;
they should be asking,
when are they from,
these that are,
unidentified.