Live astronomy · from Cornwall to your screen

Explore the Universe from your sofa.

Take control of a real telescope, observe the Moon, planets, galaxies and nebulae, and discover the science behind what you see — live, guided and interactive whatever the weather.

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Andromeda Galaxy captured through astronomical imaging
Andromeda GalaxyOne of the objects waiting beyond the solar system.
2.5 million lyLight from another galaxy
Observe · Understand · MeasureMore than looking at pretty pictures
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Moon masterclass Moon Masterclass Sat 05th September 2026 · 3pm Moon masterclass Moon Masterclass Sat 05th September 2026 · 6pm

Observe & learn

Join a live remote telescope session or explore the science through an interactive astronomy masterclass.

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Image

See what different instruments can reveal, from lunar detail to faint galaxies and nebulae.

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Go beyond observation with calculations, celestial mechanics and hands-on astronomy articles.

Enter the Astronomy Lab

Software

Turn telescope images into measurements with tools built for practical astronomy experiments.

Discover the tools
Astronomy Lab

Don't just look. Work it out.

Explore hands-on astronomy experiments, interactive tools and real observations — then use the Astronomy Lab to investigate the physics behind what you see.

From photons to physics

Turn observations into measurements.

Why does the Moon look almost the same size as the Sun? How can orbital motion tell us a planet's mass? The Astronomy Lab turns real observations into experiments, calculations and physical insight.

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I Missed the Lunar Eclipse — But Here's What Happened

I Missed the Lunar Eclipse — But Here's What Happened

On 28 August 2026, a deep partial lunar eclipse placed around 93% of the Moon inside Earth's shadow. I didn't see it — but its connection with the 12 August solar eclipse tells a fascinating astronomical story.

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Chasing the Sun: The 12 August 2026 Solar Eclipse from Cornwall

Chasing the Sun: The 12 August 2026 Solar Eclipse from Cornwall

From a field in North Hill, Cornwall, I followed the 12 August 2026 partial solar eclipse with a Seestar S50, capturing the Moon progressively covering the Sun as it descended towards the horizon.

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Can You Measure the Distance to the Moon with a Seestar S50?

Can You Measure the Distance to the Moon with a Seestar S50?

Using a Seestar S50, simple geometry and repeated lunar measurements, we estimate the Earth–Moon distance and compare the result with NASA/JPL Horizons.

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What Are Constellations?

What Are Constellations?

Understand what constellations really are, how they divide the night sky and why astronomers still use them.

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Identify Planetary Moons in Seestar S50 Images

Identify Planetary Moons in Seestar S50 Images

Upload a Seestar S50 image and compare it with calculated satellite positions to identify planetary moons.

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Can a Seestar S50 Photograph Uranus's Moons?

Can a Seestar S50 Photograph Uranus's Moons?

Explore whether the Seestar S50 can capture Uranus and some of its faint satellites.

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How to Measure the Sun's Rotation Using Sunspots

How to Measure the Sun's Rotation Using Sunspots

Track sunspots over several days and use their motion to estimate the rotation period of the Sun.

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Why Venus & Mercury Have Phases

Why Venus & Mercury Have Phases

Understand why Venus and Mercury show phases and what this reveals about their orbits around the Sun.

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Perseid Meteor Shower

Perseid Meteor Shower

Discover what causes the Perseid meteor shower, where the meteors come from and why they appear each summer.

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Aurora Borealis: Understanding the Northern Lights

Aurora Borealis: Understanding the Northern Lights

Discover what causes the aurora borealis and explore the spectacular northern lights observed in May 2024.

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Moon Phases Today

Moon Phases Today

Check the current phase of the Moon and understand how the lunar cycle changes through the month.

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Crab Nebula: The Supernova of 1054

Crab Nebula: The Supernova of 1054

Discover the history and science of the Crab Nebula, the remnant of the famous supernova observed in 1054.

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Titius-Bode Law

Titius-Bode Law

Explore the historical mathematical pattern proposed for the distances of planets from the Sun.

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Charles Messier & the Messier Catalogue

Charles Messier & the Messier Catalogue

Discover why Charles Messier and his catalogue of deep-sky objects remain so important to astronomers.

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Asteroid Vesta

Asteroid Vesta

Explore Vesta, one of the largest objects in the asteroid belt, and discover its place in the Solar System.

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Supernova in M101: The Death of a Star

Supernova in M101: The Death of a Star

Discover what a supernova is and explore the stellar explosion observed in the Pinwheel Galaxy M101.

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Celestial Mechanics & Kepler's Laws

Celestial Mechanics & Kepler's Laws

Explore the basic physics governing astronomical orbits and understand the principles behind Kepler's laws.

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How to Calculate Saturn's Mass Using Its Moons

How to Calculate Saturn's Mass Using Its Moons

Use the orbital motion of Saturn's moons and Kepler's laws to estimate the mass of the planet.

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Saturn Moons Ephemeris

Saturn Moons Ephemeris

Calculate the positions of Saturn's major moons for a chosen date and time.

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Saturn's Moons

Saturn's Moons

Explore Saturn's major moons, their sizes, orbits, discovery history and observational characteristics.

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Apparent & Absolute Magnitude Explained

Apparent & Absolute Magnitude Explained

Understand how astronomers measure the brightness of stars and other celestial objects.

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Astronomy Ephemeris Calculator
Interactive tool

Astronomy Ephemeris Calculator

Learn what an ephemeris is and use astronomical data to find the positions of celestial objects.

Open tool
How to Measure the Diameter of the Moon

How to Measure the Diameter of the Moon

Learn how simple observations and geometry can be used to estimate the diameter of the Moon.

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Angular Size Calculator for Astronomy
Interactive tool

Angular Size Calculator for Astronomy

Understand apparent angular size and calculate how large astronomical objects appear in the sky.

Open tool
Telescope Field of View Calculator

Telescope Field of View Calculator

Calculate the field of view of a telescope or camera and see how astronomical objects will appear with different equipment.

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Two telescopes, two views

Close-up planets. Wide-field deep sky.

The observing setup is chosen for the target rather than forcing one instrument to do everything.

Alan from Show Me The Sky
Why Show Me The Sky?

A lifelong fascination, shared live.

I received my first telescope at the age of ten. The first close look at the Moon — its craters suddenly becoming a real landscape — was the moment astronomy stopped being something in books and became something I could explore for myself.

Show Me The Sky is about recreating that feeling for other people: seeing a real object through a real instrument, asking questions as you go, and then understanding a little more about the physics behind the view.

Observing from a dark-sky area in Cornwall gives us access to both Solar System targets and deep-sky objects when conditions allow.

Live observingAstrophotographyImage processingHands-on astronomy
From the observing room

What participants say.

“J’ai observé la Lune en direct depuis mon canapé. L’équipe est passionnée et très pédagogue. Je recommande à 100%. ”

MarcFrance

“I never imagined learning astronomy from home could feel so immersive. The theory session helped me finally understand the solar system! Highly recommended.””

EmmaU.K.

“Cette session était formidable.”

MarcFrance
Software

Turn images into measurements.

Tools created around practical astronomy workflows, from moon orbits and planetary mass to mapping telescope images on the sky.

Orbital dynamics

AstroFrame

Process Jupiter and Saturn observations, measure the motion of their main moons and use those measurements to explore orbital periods, distances and planetary mass.

Download Tutorial
Sky mapping

AstroMap Viewer

Plot telescope observations and FITS imagery against celestial coordinates so you can connect what appears in an image with its position on the real sky.

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What would you like to see?

Ask about an observation, a gift session, the astronomy tools, or simply a question about the night sky.

Show Me The Sky

Launceston
Cornwall, United Kingdom

avigner@gmail.com
+44 7500 705 731