スカイダイジェスト
スカイダイジェストPDFエクスポート
選択した天体のファインダーチャートを含める：
今夜の概要
惑星ハイライト
digest.comets
初心者向け （肉眼）
双眼鏡向け
小型望遠鏡 （3–6インチ）
大型望遠鏡 （8–12インチ）
今週の予定
| 日 | 月 | 火 | 水 | 木 | 金 | 土 |
| 🌓 46% | 🌔 57% | 🌔 68% | 🌔 79% | 🌔 87% | 🌔 94% | 🌕 98% |
| — | — | — | — | — | — | — |
NASA 今日の天文写真
Phobos: Doomed Moon of Mars
This moon is doomed. Mars, the red planet named for the Roman god of war, has two tiny moons, Phobos and Deimos, whose names are derived from the Greek for Fear and Panic. These Martian moons may well be captured asteroids originating in the main asteroid belt between Mars and Jupiter or perhaps from even more distant reaches of our Solar System. The larger moon, Phobos, is indeed seen to be a cratered, asteroid-like object in this stunning color image from the robotic Mars Reconnaissance Orbiter, which can image objects as small as 10 meters. But Phobos orbits so close to Mars - about 5,800 kilometers above the surface compared to 400,000 kilometers for our Moon - that gravitational tidal forces are dragging it down. In perhaps 50 million years, Phobos is expected to disintegrate into a ring of debris.
APODはNASAと Michigan Tech. U.
NASA APODで見るSpace News
NASA released the Artemis II launch countdown, targeting April 1 for the crewed mission that will send four astronauts (including Canadian Space Agency's Jeremy Hansen) around the Moon for the first time in over 50 years.
NASA — 26 Mar 2026
The European Service Module is highlighted as the critical component powering Artemis II, providing propulsion, power, and life support for the astronauts' deep space journey to the Moon.
ESA — 27 Mar 2026
NASA's Nancy Grace Roman Space Telescope has completed construction and is undergoing final prelaunch testing, with a media briefing scheduled for April 21 to showcase this major new observatory.
NASA — 26 Mar 2026
NASA's IXPE mission obtained new observations of supernova RCW 86, providing fresh X-ray polarimetry data that complements other telescope observations to better understand stellar explosions.
NASA — 26 Mar 2026
Track the Northern Lights
Real-time Kp index, NOAA aurora oval map, 3-day forecast, and live webcams. See the minimum Kp needed for aurora at your latitude and get alerted when conditions are right.
Open Aurora Forecast