Månens faser under April
- 2022-04-01: Nymåne
- 2022-04-07: Månen längst från jorden (404400 km)
- 2022-04-09: Växande halvmåne
- 2022-04-16: Fullmåne
- 2022-04-19: Månen närmast jorden (365100 km)
- 2022-04-23: Avtagande halvmåne
- 2022-04-30: Nymåne
Kvällshimlen under April
- 2021-04-04: ars 0.5° söder om Saturnus
- 2021-04-05: Månen 4° söder om Pleiaderna (Alcyone)
- 2021-04-06: Månen 7° norr om Aldebaran
- 2021-04-09: Månen 2° söder om Pollux
- 2021-04-12: (2) Pallas i konjunktion med solen
- 2021-04-12: Månen 5° norr om Regulus
- 2021-04-12: Jupiter 0.1° norr om Neptunus
- 2021-04-16: (15) Eunomia i opposition
- 2021-04-16: Månen 5° norr om Spica
- 2021-04-19: Månen 3° norr om Antares
- 2021-04-22: Lyriderna i maximum
- 2021-04-24: Månen 5° söder om Saturnus
- 2021-04-25: Månen 4° söder om Mars
- 2021-04-27: Månen 4° söder om Venus
- 2021-04-27: Månen 4° söder om Jupiter
- 2021-04-27: Venus 0.1° söder om Neptunus
- 2021-04-30: Merkurius 1.3° söder om Pleiaderna (Alcyone)
- 2021-04-30: Venus 0.2° söder om Jupiter
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
- 2022-04-05: First Contact Day
- 2022-04-06: Från Gotland till Sutton Hoo
- 2022-04-07: The Art of Radiation
- 2022-04-09: Trekdag
- 2022-04-22: Lyriderna
Newsfeed
- 2022-03-28: Mysterious Death of Carbon Star Plays Out Like Six-Ring Circus
- 2022-03-24: Remarkable Simulations of the Early Universe, from the Dark Ages through First Light
- 2022-03-08: Astronomers discover largest molecule yet in a planet-forming disc
- 2022-02-25: Hidden Turbulent Motion on the Sun
- 2022-01-13: Multi-wavelength Study Shows First Comprehensive View of a Stellar Flyby Event
- 2022-01-12: 1000-Light-Year Wide Bubble Surrounding Earth is Source of All Nearby, Young Stars
- 2022-01-11: ALMA Catches Intruder Redhanded in Rarely Detected Stellar Flyby Event
- 2021-12-22: Discovery of a Hundred New Free-Floating Planets Roaming Our Galaxy
- 2021-12-14: Stellar Ashfall Could Help Distant Planets Grow
- 2021-12-07: VLA Reveals Double-Helix Structure in Massive Galaxys Jet
- 2021-12-05: Tails Tell the Tale of Galaxy Evolution
- 2021-12-02: Stellar Cocoon with Organic Molecules at the Edge of our Galaxy
2019-01-21 Blodmåne (Foto: Magnus Norden)
2014-11-25 Skymning över Brunnsviken (Foto: Magnus Norden)
2011-12-10 Månförmörkelse (Foto: Magnus Norden)