
210 Isabella
Main-belt asteroid.
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210 Isabella
Main-belt asteroid.
NGC 2129
Open cluster in the constellation Gemini.
SpaceX CRS-9
2016 American resupply spaceflight to the ISS.
Pioneer 11
First spacecraft to visit Saturn (1973–1995).
Eclipse
Astronomical event where one body is hidden by another.
Chandra Deep Field South
Astronomical survey in Fornax.
Pole star
Visible star that is nearly aligned with Earth's axis of rotation.
Xi Boötis
Star in the constellation Boötes.
Near-Earth object
Small Solar System body with an orbit that can bring it close to Earth.
Psi3 Piscium
Star in the constellation Pisces.
Mesosphere
Layer of the atmosphere directly above the stratosphere and below the thermosphere.
Montes Apenninus
Mountain range on the Moon.
Delta1 Tauri
Binary star in the constellation Taurus.
Byrd (lunar crater)
Crater on the Moon.
Upsilon2 Cassiopeiae
Star in the constellation Cassiopeia.
NGC 4100
Galaxy in the constellation Ursa Major.
5th Space Launch Squadron
Military unit.
NGC 5470
Spiral galaxy in the constellation Virgo.
Dione (moon)
Moon of Saturn.
55 Cancri Ad
Extrasolar planet in the constellation Cancer.