Most low-energy neutrinos that arrive on earth come from the sun.

ECONOMIST: Neutrino astronomy: Deep and meaningful | The

Cherenkov telescopes such as the Hess array in Namibia or the Magic facility in the Canary Islands catch this process directly from the atmosphere when the particles first arrive at Earth.

BBC: Hawc gamma-ray telescope captures its first image

Because they are so far away, by the time their images traverse the universe at the speed of light and arrive here for Schmidt to see them, more time has passed than the Earth and the sun are old.

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As an aside, NASA also notes that Dragon is still set to arrive back on earth for a splashdown on the 25th, as initially planned.

ENGADGET: NASA: SpaceX Dragon capsule to reach ISS on March 3rd at 6:01AM ET

Such is the distance between the planets, it can take 20 minutes for an instruction sent from Earth to arrive at Mars.

BBC: Mars robots begin test campaign

My father and I were disappointed to arrive at the 1965 New York World's Fair after the scoreboard-style lighted display on the Earth's population changed from 2, 999, 999, 999 people to a bit over 3 billion.

CNN: 'The Science Guy' says: 'Save the Earth'