Månens faser under December
- 2020-11-30: Fullmåne
- 2020-12-08: Avtagande halvmåne
- 2020-12-12: Månen närmast jorden (361800 km)
- 2020-12-14: Nymåne
- 2020-12-22: Växande halvmåne
- 2020-12-24: Månen längst från jorden (405000 km)
- 2020-12-30: Fullmåne
Kvällshimlen under December
- 2020-12-04: Månen 4° söder om Pollux
- 2020-12-06: Månen 5° norr om Regulus
- 2020-12-07: Månen 0.5° norr om Vesta.
- 2020-12-10: Månen 7° norr om Spica
- 2020-12-12: Månen 1° norr om Venus
- 2020-12-12: C/2020 S3 Erasmus som ljusast
- 2020-12-14: Geminiderna i maximum
- 2020-12-17: Månen 3° söder om Jupiter
- 2020-12-17: Månen 3° söder om Saturnus
- 2020-12-21: Vintersolstånd
- 2020-12-21: Jupiter 0.1° söder om Saturnus
- 2020-12-22: Ursiderna i maximum
- 2020-12-23: Venus 6° norr om Antares
- 2020-12-23: Månen 6° söder om Mars
- 2020-12-26: Månen 6° söder om Pleiaderna (Alcyone)
- 2020-12-27: Månen 5° norr om Aldebaran
- 2020-12-31: Månen 4° söder om Pollux
Rymdfartshistoria under December
- 1960-12-01: Korabl-Sputnik 3, Cospar-ID 1960-017A
- 1995-12-02: Solar and Heliospheric Observatory, Cospar-ID 1995-065A
- 1965-12-03: Luna 8, Cospar-ID 1965-099A
- 2014-12-03: Hayabusa2, Cospar-ID 2014-076A
- 1959-12-04: Little Joe 2, Cospar-ID LILJOE-2
- 1965-12-04: Gemini 7, Cospar-ID 1965-100A
- 1957-12-06: Vanguard TV3, Cospar-ID VAGT3
- 1958-12-06: Pioneer 3, Cospar-ID 1958-008A
- 1972-12-07: Apollo 17, Cospar-ID 1972-096A
- 1998-12-10: Astrid 2, Cospar-ID 1998-072B
- 1999-12-10: XMM-Newton, Cospar-ID 1999-066A
- 1971-12-11: Ariel 4, Cospar-ID 1971-109A
- 1961-12-12: OSCAR 1, Cospar-ID 1961-034B
- 1967-12-13: Pioneer 8, Cospar-ID 1967-123A
- 2009-12-14: Wide-field Infrared Survey Explorer, Cospar-ID 2009-071A
- 1960-12-15: Pioneer P-31, Cospar-ID PIONZ
- 1965-12-15: Gemini 6A, Cospar-ID 1965-104A
- 1984-12-15: Vega 1, Cospar-ID 1984-125A
- 1965-12-16: Pioneer 6, Cospar-ID 1965-105A
- 1960-12-19: Mercury Redstone 1A, Cospar-ID MERCR1A
- 2013-12-19: Gaia, Cospar-ID 2013-074A
- 1968-12-21: Apollo 8, Cospar-ID 1968-118A
- 1984-12-21: Vega 2, Cospar-ID 1984-128A
- 1961-12-22: SAMOS 5, Cospar-ID 1961-035A
Aktiviteter i December
- 2020-12-08: Nobelföreläsningar
- 2020-12-09: Presskonferens med Nobelpristagare
- 2020-12-12: C/2020 S3 Erasmus peakar
- 2020-12-14: Geminiderna i maximum
- 2020-12-22: Ursiderna i maximum
Newsfeed
- 2020-11-27: An Earth-like Stellar Wind for Proxima Centauri c
- 2020-11-26: Earth Faster, Closer to Black Hole in New Map of Galaxy
- 2020-11-19: VLA Sky Survey Reveals Newborn Jets in Distant Galaxies
- 2020-11-12: Complete Imaging of a Cluster Collision
- 2020-11-10: Catching a Radio Surprise
- 2020-10-27: Galaxies in the Infant Universe Were Surprisingly Mature
- 2020-10-20: The Monster in the Middle of the Milky Way Is…Spinning Slowly?
- 2020-10-16: Planet Formation in Stellar Infancy
- 2020-10-15: Two planets around a red dwarf
- 2020-10-12: Studying the Sun as a Star to Understand Stellar Flares and Exoplanets
- 2020-10-12: Scientists Get Front-Row Seats to Star’s Death by Spaghettification
- 2020-10-07: Growing up Stardust: Scientists Discover That Stars and Planets May Be Siblings
- 2020-10-07: Green Light Unveils the Presence of an Old and Metal-Poor Halo in a Giant Elliptical Galaxy
- 2020-10-05: Evolutionary Status of Extremely Li-Enhanced Red Giants
- 2020-09-29: Second Alignment Plane of Solar System Discovered
- 2020-09-25: Pair of Massive Baby Stars Swaddled in Salty Water Vapor
- 2020-09-25: Could Life Exist Deep Underground on Mars?
- 2020-09-23: M87*s Shadow Is Wobbling and Has Been for a While
- 2020-09-18: VLBA Makes First Direct Distance Measurement to Magnetar
- 2020-09-16: Unraveling a Spiral Stream of Dusty Embers from a Massive Binary Stellar Forge
- 2020-09-15: Phosphine on Venus: A step forward to understand biomarker molecule
- 2020-09-03: ALMA Discovers Misaligned Rings in Planet-Forming Disk Around Triple Stars
- 2020-09-03: The Orbital Planes of ”Young Planets” Are Not Inclined? : New Knowledge About the Evolution of Planetary Systems
2019-01-21 Blodmåne (Foto: Magnus Norden)
2014-11-25 Skymning över Brunnsviken (Foto: Magnus Norden)
2011-12-10 Månförmörkelse (Foto: Magnus Norden)
