Månens faser under April
- 2023-04-06: Fullmåne
- 2023-04-13: Avtagande halvmåne
- 2023-04-16: Månen närmast jorden (368000 km)
- 2023-04-20: Nymåne
- 2023-04-27: Växande halvmåne
- 2023-04-28: Månen längst från jorden (404300 km)
- 2023-05-05: Fullmåne
Kvällshimlen under April
- 2023-03-02: Merkurius 1° söder om Saturnus
- 2023-03-02: Venus 0.5° norr om Jupiter
- 2023-03-03: Månen 1.7° söder om Pollux
- 2023-03-06: Månen 5° norr om Regulus
- 2023-03-10: Månen 3° norr om Spica
- 2023-03-14: Månen 1.5° norr om Antares
- 2023-03-16: Neptunus i konjunktion med solen
- 2023-03-17: Merkurius i övre konjunktion med solen
- 2023-03-19: Månen 4° söder om Saturnus
- 2023-03-20: Vårdagjämning
- 2023-03-21: (1) Ceres i opposition
- 2023-03-22: Månen 0,5° söder om Jupiter.
- 2023-03-24: Månen 0,1° söder om Venus.
- 2023-03-26: Månen 1,8° söder om Pleiaderna (Alcyone)
- 2023-03-26: Månen 9° norr om Aldebaran
- 2023-03-28: Månen 2° norr om Mars
- 2023-03-28: Merkurius 1,5° norr om Jupiter
- 2023-03-30: Månen 1.6° söder om Pollux
- 2023-03-31: Venus 1.3° norr om Uranus
- 2023-04-02: Månen 5° norr om Regulus
- 2023-04-06: Månen 3° norr om Spica
- 2023-04-10: Månen 1.5° norr om Antares
- 2023-04-11: Venus 3° söder om Pleiaderna (Alcyone)
- 2023-04-12: Merkurius i max östlig elongation
- 2023-04-12: Jupiter i konjunktion med solen
- 2023-04-16: Månen 3° söder om Saturnus
- 2023-04-20: Venus 8° norr om Aldebaran
- 2023-04-21: Månen 2° söder om Merkurius
- 2023-04-22: Månen 1.8° söder om Pleiaderna (Alcyone)
- 2023-04-22: Lyriderna i maximum
- 2023-04-23: Månen 9° norr om Aldebaran
- 2023-04-23: Månen 1.3° norr om Venus
- 2023-04-24: (4) Vesta i konjunktion med solen
- 2023-04-26: Månen 3° norr om Mars
- 2023-04-26: Månen 1.5° söder om Pollux
- 2023-04-29: Månen 5° norr om Regulus
- 2023-04-30: (7) Iris i opposition
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
Händelser i April
- 2023-04-05: First Contact Day
- 2023-04-12: Årsdagen av Juri Gagarins resa
- 2023-04-12: International Day of Human Space Flight
- 2023-04-15: Trekdag i Skarpnäck
- 2023-04-22: Lyriderna i max
Newsfeed
- 2023-03-23: AI Finds that First Stars were Clustered Together
- 2023-03-08: ALMA Traces History of Water in Planet Formation Back to the Interstellar Medium
- 2023-03-02: Resurrected Supernova Provides Missing-Link
- 2023-02-28: Spiral Pattern Gives Clue to how High-Mass Stars Form
- 2023-02-24: Extreme Galaxy Reveals Clues to Early Supermassive Black Hole Formation
- 2023-02-12: 12 New Jovian Moons Discovered
- 2023-01-26: A Tale of a Tail: A Tidally-Disrupting Ultra-Diffuse Galaxy in the M81 Group
- 2023-01-23: Direct Imaging Uncovers a Giant Planet-Like Brown Dwarf in the Hyades Cluster
- 2023-01-19: Discovery of the Largest-class Monster Supercluster of Galaxies in the Universe 5.5 Billion Light-Years Away
- 2023-01-11: Cosmic Superbubble’s Magnetic Field Charted in 3D for the First Time
- 2023-01-09: Hydrogen Masers Reveal New Secrets of a Massive Star to ALMA Scientists
- 2023-01-09: ALMA Scientists Find Pair of Black Holes Dining Together in Nearby Galaxy Merger
- 2022-12-21: Black Hole Activity May Protect Growth of Other Galaxies
- 2022-11-22: International Team Observes Innermost Structure of Quasar Jet
- 2022-11-14: Gold-rich Stars Came from Ancient Galaxies
- 2022-10-27: Rare Earth Element Synthesis Confirmed in Neutron Star Mergers
- 2022-10-25: VLA Finds Cosmic Rays Driving Galaxy’s Winds
- 2022-10-07: The Mouse That Roared: The Strange Tale of a Brown Dwarf
- 2022-09-14: New Evidence of Baby Planet in the Making
- 2022-09-08: Discovery of Two Temperate Super-Earths, the Outer One Orbits in the Habitable Zone
2019-01-21 Blodmåne (Foto: Magnus Norden)
2014-11-25 Skymning över Brunnsviken (Foto: Magnus Norden)
2011-12-10 Månförmörkelse (Foto: Magnus Norden)