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Night Sky Companion
A simple guide to what's visible tonight — then step outside and find it.
Your Name (optional)
Experience Level
🌑
Brand New
Never done this
🌒
Beginner
Found a few things
🌓
Comfortable
Know the basics
🌕
Advanced
Know the sky
Main Use
🏡
Porch / Yard
From home base
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Walking
Park or neighborhood
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Family
With kids
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Dark Sky Trips
Away from city light
Tonight's goal: find one obvious thing from your porch.
Your choices are saved locally. Nothing leaves this app.
Outside Now
📍 Home / Porch
Look West
Venus
✦ High confidence — usually visible this month
✦ Visible now — best after sunset
The brightest point of light in the western sky. Far too bright to be a star — that's Venus.
●○○○○ Easy — perfect first target
🔭 Open Stellarium — Point at the Sky
Visibility is approximate, based on general monthly conditions for this area. Weather, clouds, and horizon obstructions affect what you can see. Use Stellarium to verify.
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That's completely normal.
Even experienced observers come up empty sometimes. Let's figure out what happened.
☁️
Was it cloudy or hazy? Clouds win every time — try again tomorrow.
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Are trees or buildings blocking the view? Try moving a few feet.
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Were you facing the right direction? The app gives a general direction — it can vary by time of night.
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Was it too early or too late? Some objects rise or set during the night.
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Open Stellarium and point your phone at the sky — it will show you exactly where to look.
Try an easier target instead
🔭 Open Stellarium
✨
You found it.
Logged to your observation history
Every object you find makes the next one easier. The sky becomes a map you know.
📍 Choose Location
✦ Log Observation
What did you observe?
Notes (optional)
📍 Home / Porch Change →
Sky
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Temp
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Moon
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Seeing
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Tonight Score
★★★☆☆
Calculating conditions…
Loading sky conditions…
Based on clouds, moonlight, and visible targets.
On This Night
Tonight's Best Target
Venus
⭐ Easy
📍 West
🕐 After Sunset
"Bright enough to see even from a parking lot."
✦ Tonight
Loading tonight's sky…
Fetching conditions…
This Week in the Sky
One Minute Astronomy · Daily Fact
Loading today's astronomy fact…
🏡 Porch Mode — From Right Where You Are
You have a chair, a drink, and 20 minutes. Here's what's up.
🔭
Essential Tool — Free, No Signup
Stellarium — Point Your Phone at the Sky
Instantly names any star, planet, constellation, or satellite you point it at
→
Moving Light in the Sky
NASA Spot the Station
The ISS passes over most areas every few days — visible to the naked eye as a bright moving point
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About This App's Visibility Data
This app uses month-based visibility guidance — helpful for planning, but not a real-time planetarium. Weather, clouds, trees, and your exact horizon always have the final word. When in doubt, open Stellarium.
Coming Up
Sky Calendar
Right Now Outside
June Nature
Start Here
7 Lessons to the Sky
Under 5 minutes each. Go outside for every one.
How These Lessons Work
Each lesson gives you one objective, tells you what success looks like, and warns you about the most common mistake. Stellarium is your verification tool at every step.
Your Progress
0 of 7 complete
Find It Tonight
Planets & Constellations
Every object answers: can you see it tonight?
Visibility Confidence
Great tonight and Visible tonight = usually reliable this month. Tricky = low on the horizon or needs dark skies. Light pollution affects faint objects — planets and the Moon are always easier from home.
Planets
Constellations
Your Toolkit
Sky Apps
Everything you need — all free.
Plan Ahead
Sky Calendar
Meteor showers, eclipses, planet oppositions.
Your Journey
Observations
Every object you've found. Every night outside.
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Nights This Month
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Current Streak
Every clear night is a chance to explore. Missed nights don't reset your progress — showing up is what counts.
Your Sky Stats
This Season
Summer Sky Progress
0 of 6 found this season
Beginner Challenges
Find These
0
Found
10
Total
0
Visible Tonight
Add Entry
Log an Observation
How did it go?
What were you looking for?
Location
Notes
History
Your Observations
Export
Save Your Log
Export everything as a text file — observations, discoveries, notes.
Settings
App Settings
Red Light Mode
Preserves night vision outdoors. Recommended while observing.
Reset Setup
Re-run the first-time setup
Dark Sky Guide
Observing Locations
From Home
Parks & Nearby
Dark Sky Sites
Keyboard
Shortcuts
/ Open search
Esc Close search, modals, overlays
About
Night Sky Companion
Version 10.5 · Single file · Works offline after first load

Built around one question: Can I see this tonight?

Visibility data is calibrated for mid-latitude locations (~38°N). Exact timing varies by location and date. Always verify with Stellarium.

Default location: Louisville, KY · 38.25°N. You can change this by selecting a different location above.
What This App Does and Doesn't Do
✓ Tells you what's usually visible this month
✓ Guides you to find specific objects
✓ Links to free real-time tools (Stellarium)
✗ Does not give real-time planet positions
✗ Does not replace a planetarium app

Light pollution affects faint objects significantly. Planets, the Moon, and bright constellations are visible from most locations. The Milky Way and faint galaxies need dark skies.
✨
You found something new.