Everand Logo

Welcome to Everand!

  • BBC Sky at Night

    MOONWATCH

    Aug 13, 2020 2 minutes

    is a large and quite ancient crater. If you’re a fan of the shadow and light play which produces clair-obscur effects, you may be familiar with at least part of Purbach as its eastern rim forms part of the Lunar X. The other craters involved are 68km to the northeast and 68km to the east.

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

    More from BBC Sky at Night

    BBC Sky at Night5 min read
    Sky-Watcher EQ-AL55i Pro Wi-Fi mount
    ∙ Price £779 ∙ Mount type Equatorial with Go-To ∙ Load capacity 10kg ∙ Slew speed Up to 4° per second ∙ Power input 12V DC ∙ Autoguider port ST4 ∙ Protocols SynScan, ASCOM via Wi-Fi or USB ∙ Weight 14.8kg ∙ Supplier Optical Vision Ltd ∙ Email info@op
    BBC Sky at Night3 min read
    The Planets
    PICK OF THE MONTH Best time to see: 30 June, 03:50 BST (02:50 UT) Altitude: 15° Location: Aries Direction: East Features: Surface markings, weather Recommended equipment: 150mm scope or larger Mars is a mag. +1.0 morning object at the start of June,
    BBC Sky at Night1 min read
    Travel Restrictions
    You would expect that extremely energetic particles are hard to stop, but no. If a high-energy proton or electron collides with an atomic nucleus in Earth's atmosphere (or in interstellar space), the collision energy is converted into a whole load of

    Related Books & Audiobooks