Everand Logo

Welcome to Everand!

  • BBC Sky at Night

    MOONWATCH

    Nov 16, 2023 2 minutes

    Cassini

    Type: Crater

    Size: 58km

    Longitude/latitude: 4.7° E, 40.3° N

    Age: 3.8–3.9 billion years

    Best time to see: First quarter (19 December) or six days after full Moon (4 December and 3 January)

    Minimum equipment: 50mm refractor

    is an example of a ring plain crater, a narrow rim enclosing a relatively flat floor area (aside

    You’re reading a preview, subscribe to read more.

    More from BBC Sky at Night

    BBC Sky at Night2 min read
    Binocular Tour
    10 x 50 In the days before Herman Snellen introduced his eponymous eye-test chart, mag. +2.2 Mizar (Zeta (ζ) Ursae Majoris) and mag. +4.0 Alcor (80 Ursae Majoris) were used as an eyesight test: if you couldn’t see two stars, you knew you needed spect
    BBC Sky at Night3 min read
    Build A Parallax-measuring Tool
    Hold up a finger and look at it with just one eye, then switch to just the other and you'll see your finger appear to ‘jump’ from side to side. The further away the finger, the smaller the jump. This apparent shift of a nearby object against a distan
    BBC Sky at Night2 min read
    Looking back: The Sky at Night 15 May 1974
    On the 15 May 1974 episode, Patrick Moore spoke with US astronomer Carl Sagan about the many investigative strands when looking for alien life. “One is laboratory work on the question of the origin of life, making the molecules which [would]… lead ev

    Related Books & Audiobooks