Månens faser under April

• 2021-03-28: Fullmåne
• 2021-03-30: Månen närmast jorden (360300 km)
• 2021-04-04: Avtagande halvmåne
• 2021-04-12: Nymåne
• 2021-04-14: Månen längst från jorden (406100 km)
• 2021-04-20: Växande halvmåne
• 2021-04-27: Fullmåne
• 2021-04-27: Månen närmast jorden (357400 km)
• 2021-05-03: Avtagande halvmåne

Kvällshimlen under April

• 2021-04-01: Månen 5° norr om Antares
• 2021-04-06: Månen 4° söder om Saturnus
• 2021-04-07: Månen 4° söder om Jupiter
• 2021-04-15: Månen 5° söder om Pleiaderna (Alcyone)
• 2021-04-16: Månen 5° norr om Aldebaran
• 2021-04-17: Månen 0.1° söder om Mars
• 2021-04-19: Merkurius i övre konjunktion med solen
• 2021-04-19: Månen 3° söder om Pollux
• 2021-04-22: Lyriderna i maximum
• 2021-04-22: Månen 5° norr om Regulus
• 2021-04-26: Månen 6° norr om Spica
• 2021-04-26: Merkurius 1.3° norr om Venus
• 2021-04-29: Månen 5° norr om Antares
• 2021-04-30: Uranus i konjunktion med solen

Rymdfartshistoria under April

• 1960-04-01: TIROS 1, Cospar-ID 1960-002B
• 1963-04-02: Luna 4, Cospar-ID 1963-008B
• 1968-04-04: Apollo 6, Cospar-ID 1968-025A
• 1991-04-05: Compton Gamma Ray Observatory, Cospar-ID 1991-027B
• 1962-04-06: Kosmos 2, Cospar-ID 1962-009A
• 1973-04-06: Pioneer 11, Cospar-ID 1973-019A
• 1964-04-08: Gemini 1, Cospar-ID 1964-018A
• 1970-04-11: Apollo 13, Cospar-ID 1970-029A
• 1961-04-12: Vostok 1, Cospar-ID 1961-012A
• 1959-04-13: Discoverer 2, Cospar-ID 1959-003A
• 1960-04-13: Transit 1B, Cospar-ID 1960-003B
• 1959-04-14: Vanguard SLV 5, Cospar-ID VAGSL5
• 1960-04-15: Discoverer 11, Cospar-ID 1960-004A
• 2005-04-15: DART, Cospar-ID 2005-014A
• 1972-04-16: Apollo 16, Cospar-ID 1972-031A
• 1962-04-23: Ranger 4, Cospar-ID 1962-012A
• 1967-04-23: Soyuz 1, Cospar-ID 1967-037A
• 1971-04-23: Soyuz 10, Cospar-ID 1971-034A
• 1962-04-24: Kosmos 3, Cospar-ID 1962-013A
• 1961-04-25: Mercury Atlas 3, Cospar-ID MERCA3
• 1962-04-25: Saturn SA-2, Cospar-ID SATURNSA2
• 1990-04-25: Hubble Space Telescope, Cospar-ID 1990-037B
• 1962-04-26: Kosmos 4, Cospar-ID 1962-014A
• 1962-04-26: Ariel 1, Cospar-ID 1962-015A
• 1961-04-27: Explorer 11, Cospar-ID 1961-013A
• 1958-04-29: Vanguard TV5, Cospar-ID VAGT5

Aktiviteter i April

• 2021-04-01: Vatten: Den märkligaste vätskan
• 2021-04-01: Gamla Uppsala Museum: Påsken och andra vårtraditioner
• 2021-04-12: Internationella Rymdfartsdagen
• 2021-04-19: Statsvetare pratar politik: Ett civilsamhälle i transformation
• 2021-04-21: Ingenjörerna

Newsfeed

• 2021-03-29: Stellar Eggs near Galactic Center Hatching into Baby Stars
• 2021-03-24: New Images Reveal Magnetic Structures Near Supermassive Black Hole
• 2021-03-18: Scientists Uncover Warehouse-Full of Complex Molecules Never before Seen in Space
• 2021-03-12: Astronomers Detect a Black Hole on the Move
• 2021-03-08: Most Distant Cosmic Jet Providing Clues About Early Universe
• 2021-03-05: A Giant, Sizzling Planet May be Orbiting the Star Vega
• 2021-02-26: The Distance to the North Polar Spur
• 2021-02-22: VLA Helps Astronomers Make New Discoveries About Star-Shredding Events
• 2021-02-20: Sounding Rocket CLASP2 Elucidates Solar Magnetic Field
• 2021-02-15: Comet or Asteroid: What Killed the Dinosaurs And Where Did it Come From?
• 2021-02-15: Flipped-Over Exoplanets Prove New Disk-Tilt Mechanism
• 2021-02-10: Record Breaking Distant Solar-System Object
• 2021-01-29: Modeling Galaxy Formation
• 2021-01-26: QuasarModels suggest galactic collisions can starve massive black holes
• 2021-01-12: Quasar Discovery Sets New Distance Record

2019-01-21 Blodmåne (Foto: Magnus Norden)

2014-11-25 Skymning över Brunnsviken (Foto: Magnus Norden)

2011-12-10 Månförmörkelse (Foto: Magnus Norden)