Éphéméride Chaque jour a son histoire

Éphéméride astronomique du jour

Données astronomiques

Soleil
Lever
07:13
Coucher
20:31
Durée du jour 13h 17min (+3min 33s) Midi solaire 13:52 Crépuscule civil 06:43 — 21:02 Heure dorée 19:31 — 20:31
Lune
Gibbeuse décroissante — 07/04/2026
Gibbeuse décroissante
Illumination : 75%

Image astronomique du jour

The Path of Artemis II

Why doesn't Artemis II land on the Moon? The main reason is that Artemis II is primarily a test mission designed to make a future Artemis missions -- which will land humans on the Moon -- better prepared. Similarly, NASA's Apollo 8 and Apollo 10 went right near the Moon as tests before Apollo 11 -- which landed. As the trajectory in the featured animated video shows, Artemis II will loop around both the Earth and the Moon before returning to the Earth about 10 days after launch. The Artemis II mission will take humans outside the Earth's magnetosphere for the first time since the Apollo missions 50 years ago. In the video, particles from the solar wind are shown as streaks, while the Earth's reacting magnetosphere is shown in flickering green. The Earth's magnetosphere is important in deflecting powerful particles arriving from the Sun as well as creating picturesque auroras visible from the Earth's surface. Explore the Universe: Random APOD Generator