Star
A luminous sphere of hot plasma. Our Sun is a star.
Get to know
the night sky.
No telescope or birth chart required. Start with the difference between things in space, why the Moon changes appearance, and how to watch a meteor shower responsibly.
Available now · Evergreen, source-backed beginner guide01 · What is actually up there?
Stars produce their own light through nuclear fusion. Planets orbit stars and generally shine in our night sky by reflecting sunlight. A constellation is an officially defined region of the sky that can help us describe where objects appear. Stars that appear close together from Earth are not necessarily close together in space.
Planet
A world orbiting a star. The bright planets you see do not make their own visible light.
Constellation
A named sky region, not a promise that its stars form one physical cluster.
Check your understanding: Are stars in one constellation necessarily neighbors?
No. Their arrangement is an apparent pattern from Earth's viewpoint. They may be at very different distances from us.
02 · Why the Moon has phases
The Sun always illuminates approximately half of the Moon. As the Moon moves around Earth, we see different proportions of that sunlit half. New, crescent, quarter, gibbous, and full describe how much of the visible Moon appears illuminated. Ordinary phases are not caused by Earth's shadow; Earth's shadow is involved in a lunar eclipse.
NewSunlit side mostly away from us
CrescentA thin sunlit portion visible
First quarterHalf the disk looks bright
FullNear side appears fully bright
Illustration only. These are not tonight's actual phase, rise/set time, or local viewing conditions.
Check your understanding: Does Earth's shadow create each monthly Moon phase?
No. The changing viewing angle of the Moon's sunlit half creates the regular phases. A lunar eclipse happens when Earth's shadow falls on the Moon.
03 · What is a meteor?
A meteoroid is a small body in space. A meteor is the flash of light when one enters Earth's atmosphere. A meteorite is material that survives to reach the ground. Annual showers happen when Earth crosses streams of debris along its orbit.
The Orionids are produced by debris associated with Halley's Comet. Their name comes from the apparent radiant near Orion, but meteors can streak across many parts of the sky. A wide view with your eyes is better for watching a shower than a telescope's narrow field.
Check your understanding: Should you point a telescope directly at Orion to see all Orionids?
No. Meteors can appear across the sky. A comfortable viewing position, a broad open sky, darkness, and patience are more useful for meteor-shower watching.
04 · Try a ten-minute sky observation
- Look up safely. Choose a permitted place away from vehicle traffic, shore hazards, and excessive light.
- Let your eyes adjust. Avoid bright phone screens; a longer adjustment is helpful for meteor showers.
- Identify what you see. Describe it first: bright, steady, moving, blinking, or streaking. Check sources before labeling a planet or meteor.
- Make a simple observation. Note the date, approximate time, cloud cover, and anything you are curious about. Keep location notes on your own device if you prefer.
Sources and further reading
Check the sky against evidence.
NASA provides beginner-friendly explanations of the Moon, stars, and meteor showers. Read the official Orionids page and October 2026 skywatching advice before the event.
Science distinguishes observations from predictions. Cultural stories about Orion are valuable historical traditions, but they do not determine the meteor shower's physical behavior.