Equuleus (Latin for little horse) is a faint constellation near pegasus (hence the horse theme) rising in the east these nights.
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| Constellation Equuleus "little horse" horse's head only |
Delta Equulei, is the second brightest star in this constellation. at magnitude 4.47, you'd need dark skies and/or binoculars to see it.
This star is 60 light years away.
According to Einstein's theory of relativity, the speed of light is the same for all observers. consider a spaceship moving away from the sun at half the speed of light. light from the sun speeds by us at the speed of light and then speeds by the ship at the speed of light. shouldn't it be half the speed of light relative to the ship?
Speed = distance/time. so the solution is that time slows down on the ship relative to us, keeping the speed of light constant.
Consider a photon leaving Delta Equulei 60 years ago. Some of us have experienced 60 years waiting for its arrival tonight. But the photon, traveling at the speed of light experienced no time at all.
Something to think about on this day as time flies by.
nikon D850
poor seeing
F-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR @ 55 mm F/4.5
20 sec, ISO 400
skywatcher star adventurer tracking mount
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