The first evening star is often a planet

Use this 3-step sky test

When one unusually bright point appears during twilight, test it while you are still outside:

1. Check the direction: Low in the west shortly after sunset often points to Venus. Jupiter may sit higher and remain visible for hours.
2. Watch the light: A calm, steady glow suggests a planet. Strong twinkling points more toward a star.
3. Look for movement: Watch for one minute. Aircraft and satellites move clearly; stars and planets keep roughly the same position against nearby stars.

This eliminates the most common look-alikes without a telescope.

Why stars twinkle more

Stars are so distant that your eyes receive their light as an almost perfect point source. Turbulent cells in Earth’s atmosphere bend that narrow beam differently from moment to moment, making the star appear to shift and change brightness. That is the twinkle you see.

A planet has a tiny apparent disk, even when it looks point-like to you. Light from different parts of that disk passes through different air cells, so some fluctuations average out. Planets therefore tend to shine more steadily. Near the horizon, however, even a planet can flicker noticeably.

Venus or Jupiter?

Venus always stays comparatively close to the Sun in our sky. You see it before sunrise in the east or after sunset in the west, but not in the middle of the night. That is why people call it the morning star or evening star, although Venus is a planet.

Jupiter can also be exceptionally bright. Depending on the season, it may remain visible much longer and appear farther from the Sun. Mars often looks reddish, but it is not always among the brightest objects.

Confirm what you found

For certainty, use your date and location: open a sky map app or a current monthly skywatching guide and point it toward the object. Check the direction and altitude as well as the label. You can then distinguish Venus, Jupiter, a bright star and a moving object with much more confidence.