Étoiles & Univers

Moon and Planets

Reading the Moon and planets through a modest aperture

Lunar relief and planetary motion are visible with binoculars and small telescopes. Learn what to expect, how shadows shift across the Moon's surface, and when planets offer their best views from France.

Explore Equipment

Observing targets

What to look for, and what is realistic

Each target rewards patience. Expectations matched to your instrument make the observation more rewarding.

The Moon

Craters, rilles, and maria change with the terminator, the line between light and shadow. Binoculars already reveal major features.

Jupiter and Saturn

Jupiter's four Galilean moons and Saturn's rings are visible with modest amateur instruments. Saturn's rings appear as a clear, thin outline.

Mars

Mars shows surface detail mainly near opposition, when it is closest to Earth. Expect a small disk and subtle markings.

Lunar and planetary views

Craters, maria, and planetary alignments

Lunar phases reveal changing shadows across impact craters, rilles, and mare plains. Planetary oppositions offer optimal windows for surface detail from Earth.

Astronomy photograph of the Moon near first quarter, high-contrast lunar terminator revealing crater rims and shadows, m
Astronomy photograph of lunar maria and craters in sharp focus, natural night-sky darkness, clear celestial detail, no t
Astronomy photograph of Jupiter with its Galilean moons visible through a small telescope, natural night-sky darkness, n
Astronomy photograph of Saturn and its rings, midnight blue sky, clear celestial detail, no text
Astronomy photograph of Mars near opposition showing a small reddish disk, natural night-sky darkness, no text
Wide environmental view of an amateur observer with a telescope under a dark rural French night sky, no text