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)