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National Astronomical Observatory of Japan

Picture of the Week

Introduce images / movies of astronomical pictures and facilities taken by NAOJ every week.
(March 27, 2018, Stop updating)

Subaru Telescope Detects the Sudden Appearance of Galaxies in the Early Universe
Subaru Telescope Detects the Sudden Appearance of Galaxies in the Early Universe
This is the Way Cassegrain Instrument Exchange Takes Place
This is the Way Cassegrain Instrument Exchange Takes Place
ALMA Images a Cosmic Ghost
ALMA Images a Cosmic Ghost
Electromagnetic Radiation from a Neutron Star Merger
Electromagnetic Radiation from a Neutron Star Merger
What is a Meteor shower?
What is a Meteor shower?
The Heart of Spiral Galaxy M77
The Heart of Spiral Galaxy M77
Formation of a Rich Galaxy Cluster 7 Billion Years Ago
Formation of a Rich Galaxy Cluster 7 Billion Years Ago
Oshu Space & Astronomy Museum and the Late-Spring Cherry Blossoms in the Evening Glow
Oshu Space & Astronomy Museum and the Late-Spring Cherry Blossoms in the Evening Glow
Gas Ejected from Galaxies
Gas Ejected from Galaxies
Mitaka Wrapped in the Soft Spring, the Transit Instrument Building
Mitaka Wrapped in the Soft Spring, the Transit Instrument Building
Dynamics of the Ring of Saturn (I. Wake Structure Formation)
Dynamics of the Ring of Saturn (I. Wake Structure Formation)
A Small Galaxy being Ripped Apart and Devoured by a Giant Galaxy
A Small Galaxy being Ripped Apart and Devoured by a Giant Galaxy
“Three Musketeers” Exploring the Universe
“Three Musketeers” Exploring the Universe
The Complete Einstein Ring of Distant Galaxy SDP.81
The Complete Einstein Ring of Distant Galaxy SDP.81
A Total Solar Eclipse Seen in X-rays
A Total Solar Eclipse Seen in X-rays
188-cm Reflector Telescope Dome beneath a Full Sky of Stars
188-cm Reflector Telescope Dome beneath a Full Sky of Stars
Formation and Evolution of Dark Matter Halos (II. Formation of the Large-Scale Structure of the Universe)
Formation and Evolution of Dark Matter Halos (II. Formation of the Large-Scale Structure of the Universe)
The Winter Constellations Departing Through a Bare Grove, the Start of Spring
The Winter Constellations Departing Through a Bare Grove, the Start of Spring
A Galaxy Group Evolving 300 Million Light-Years Away
A Galaxy Group Evolving 300 Million Light-Years Away
Calendar of Waxing Crescent Moons for the 7th Year of the Ansei Era
Calendar of Waxing Crescent Moons for the 7th Year of the Ansei Era
Ultra Faint Dwarf Elliptical Galaxy Boötes I
Ultra Faint Dwarf Elliptical Galaxy Boötes I
Moonbow that Appeared in the Southern Island, 2012
Moonbow that Appeared in the Southern Island, 2012
Fireworks Exploding in the Night Sky
Fireworks Exploding in the Night Sky
The Winter Sky Waxing late over the 50-cm Telescope for Public Outreach
The Winter Sky Waxing late over the 50-cm Telescope for Public Outreach
Subtle Halos about the Ring Nebula: Planetary Nebula M57
Subtle Halos about the Ring Nebula: Planetary Nebula M57
Clearing Snow from the Face of the 45-m Radio Antenna
Clearing Snow from the Face of the 45-m Radio Antenna
The Geminids Meteor Shower Falling from the Winter Night Sky
The Geminids Meteor Shower Falling from the Winter Night Sky
The Geminids Meteor Shower Falling from the Winter Night Sky
The Geminids Meteor Shower Falling from the Winter Night Sky
Map of Asakusa-Torigoe-Hottahara
Map of Asakusa-Torigoe-Hottahara
Intersection of the Solar System and the Galactic Plane
Intersection of the Solar System and the Galactic Plane