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May 29, 2024

Radio: Today’s Episode

  • The Hand

    The hand of the serpent bearer

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Radio: Yesterday’s Episode


  • The Hand

    Ophiuchus, the serpent bearer, is in the east and southeast at nightfall. The snake’s head is above Ophiuchus, with its tail below. The left hand of Ophiuchus, which holds the snake’s head, is marked by the stars Yed Prior and Yed Posterior.

  • Slimmed-Down Cluster

    The star cluster Messier 12 probably is more than 16,000 light-years away, and it contains about 200,000 stars packed into a tight ball. The cluster is in Ophiuchus, the serpent bearer, which is in the east and southeast at nightfall. You need a telescope to see M12.

  • Messier 5

    Messier 5 is a cluster of several hundred thousand stars. It is well up in the southeast at nightfall, in the constellation Serpens. It’s a bit too faint to see with the eye alone, but through binoculars it looks like a fuzzy star.

Moon Phases

At the new Moon phase, the Moon is so close to the Sun in the sky that none of the side facing Earth is illuminated (position 1 in illustration). In other words, the Moon is between Earth and Sun. At first quarter, the half-lit Moon is highest in the sky at sunset, then sets about six hours later (3). At full Moon, the Moon is behind Earth in space with respect to the Sun. As the Sun sets, the Moon rises with the side that faces Earth fully exposed to sunlight (5).

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