Three "twilight zones" separate day from night; here's how to distinguish them. ... Stargazing New moon of May 2025 leaves the night sky dark to see the summer constellations tonight.

The Night Sky This Week: June 12-18, 2023. Venus has been a bright presence in the west in the early evening sky for most of 2023, but that’s about to end as it retreats to a crescent and ...

Scientists have specific definitions for three types of twilight, ... Observing the Evening Sky in Summer's Twilight Zone. News. By Geoff Gaherty last updated 17 May 2022 ...

Twilight is defined mathematically; as the Sun’s center travels by varying amounts below the horizon, the colors in the sky morph from a vibrant light show to a dark sky. As each type of ...

What To Watch For In The Night Sky This Week: Monday, May 18-Sunday, May 24, 2020. In normal times I would be urging you to go find a dark place for this week is the first week of the year when ...

SINCE August 5, 1958, a patrol spectrograph at Hallett Station in Antarctica has frequently shown the presence of a strong emission line in the region of 6705 A. from the twilight sky. Following a ...