Månens faser under April
- 2025-04-05: Växande halvmåne
- 2025-04-13: Fullmåne
- 2025-04-14: Månen längst från jorden (406300 km)
- 2025-04-21: Avtagande halvmåne
- 2025-04-27: Nymåne
- 2025-04-27: Månen närmast jorden (357100 km)
- 2025-05-04: Växande halvmåne
Kvällshimlen under April
- 2025-04-01: Månen 0.7° norr om Pleiaderna (Alcyone). Ockultation, synlig i nordvästra Europa och Grönland. Synlig i Sverige
- 2025-04-02: Månen 11° norr om Aldebaran
- 2025-04-03: Månen 6° norr om Jupiter
- 2025-04-03: Mars 4° söder om Pollux
- 2025-04-05: Månen 2° söder om Pollux
- 2025-04-05: Månen 2° norr om Mars
- 2025-04-08: Månen 2° norr om Regulus
- 2025-04-10: Merkurius och Saturnus närmast varandra, 2°
- 2025-04-13: Månen 0.5° söder om Spica
- 2025-04-17: Månen 0.5° söder om Antares. Ockultation, synlig i södra Afrika, Australien samt delar av Antarktis
- 2025-04-21: Merkurius i max västlig elongation, 27°
- 2025-04-22: Lyriderna i maximum, radianten 10° sydväst om Vega
- 2025-04-25: Månen 2° söder om Venus
- 2025-04-25: Månen 2° norr om Saturnus
- 2025-04-26: Månen 4° norr om Merkurius
- 2025-04-27: Venus lyser klarast
- 2025-04-29: Venus 4° norr om Saturnus
- 2025-04-29: Månen 0.6° norr om Pleiaderna (Alcyone). Ockultation, synlig i nordostligaste Asien
- 2025-04-30: Månen 11° norr om Aldebaran
- 2025-04-30: Månen 5° norr 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
- 2025-04-01: Akademisymposium om lärosätenas och forskningens byråkratisering
- 2025-04-03: Öppen föreläsning av Henning Schmidt
- 2025-04-05: Trekdag i Skarpnäck
- 2025-04-12: International Day of Human Space Flight 2025
- 2025-04-22: Lyriderna i maximum
- 2025-04-26: Kulturnatt Stockholm
Newsfeed
- 2025-03-24: Black Hole Jets Reveal New Insights into the Most Powerful Phenomena in the Universe
- 2025-03-19: Astronomers Discover ’Space Tornadoes’ Around the Milky Ways Core
- 2025-03-17: Hidden Cosmic Fuel Tank Found in Infant Galaxy Cluster
- 2025-01-27: NSF VLA Contributes Crucial Puzzle Piece to ’Peculiar’ High Energy Transient
- 2025-01-15: Super-Earth vs. Sub-Neptune? The Winner is Super-Venus!
- 2025-01-15: YoungInteracting Galaxies That Create Familiar Shapes Found with Citizen Astronomers
- 2025-01-15: Young Stars in the Milky Way’s Backyard Challenge Our Understanding of How They Form
- 2025-01-14: Scientists Make First-Ever Detection of Mid-IR Flares in Sgr A*
- 2025-01-13: Astronomers Catch Unprecedented Features at Brink of Active Black Hole
- 2025-01-02: Interacting Galaxy NGC 474
- 2024-12-18: Astronomers Detect Earliest and Most Distant Blazar in the Universe
- 2024-12-13: Planets Form Through Domino Effect
- 2024-12-13: CfA Astronomers Help Catch Rare Gamma-Ray Outburst from M87s Powerful Jet
- 2024-12-12: Black Hole Explorer Hopes to Reveal New Details of Supermassive Black Holes
- 2024-12-11: Astronomers Discover Magnetic Loops Around Supermassive Black Hole
- 2024-11-18: ALMA Reveals Planets Can Form Under Harsh Radiation
- 2024-10-25: Re-analysis of Data from Milky Way Central Supermassive Black Hole Observations
- 2024-10-24: A Cosmic Chemical Breakthrough: Astronomers Discover New Building Blocks for Complex Organic Matter
- 2024-10-22: Massive Stars Born from Violent Cosmic Collapse
2019-01-21 Blodmåne (Foto: Magnus Norden)
2014-11-25 Skymning över Brunnsviken (Foto: Magnus Norden)
2011-12-10 Månförmörkelse (Foto: Magnus Norden)