Short video of the old moon rising behind Logan airport.
Short video of the old moon rising behind Logan airport.
It's also an excellent time to observe "earthshine" - the phenomenon in which sunlight is reflected from earth back to the unlit side of the moon.
It's also an excellent time to observe "earthshine" - the phenomenon in which sunlight is reflected from earth back to the unlit side of the moon.
The fall equinox new moon in the morning twilight rising above Logan airport - 20 September, 5:20am.
This is the only time of year you can see such an old moon in the morning :)
The fall equinox new moon in the morning twilight rising above Logan airport - 20 September, 5:20am.
This is the only time of year you can see such an old moon in the morning :)
But as the fall equinox approaches, the sun rises steeper - closer to 90°. So the sky is still relatively dark; dark enough for the faint bow of the old moon to be clearly visible.
But as the fall equinox approaches, the sun rises steeper - closer to 90°. So the sky is still relatively dark; dark enough for the faint bow of the old moon to be clearly visible.