A long shadow to the left
Try bringing the Sun lower on the right.
A low Sun makes a long shadow. The post blocks its light, so the shadow stretches away from the Sun.
Explore Earth
Let a question take you somewhere.
Small games, illustrated journeys and real source maps. Follow an idea from one discovery to the next.
Earth learning centre
One question can open a whole world.
Notice something. Try an idea. Find out why. Then follow it somewhere new.
Playful drawings help us explore an idea. Source maps and reports show observations or models. Each activity tells you which you’re looking at.
Light and what we see · A little game
Shadow Detective
Can you match a shadow? Move the little Sun. Watch what happens to the post’s shadow.
The interactive game needs JavaScript. You can still explore the illustration and open the answers below.
Round 1 of 3
A long shadow to the left
Match the dark shadow to the dashed outline.
Slide, tap the track, or use the arrow keys. Left end: Sun on the right. Right end: Sun on the left.
No hurry. Try a position, then check your match.
Same light. A new question: why does the Moon look different?
Try the same sunlight with the Moon → Choose another learning pathThe little idea behind the game
Same post. Different sunlight. Different shadow.
The Sun’s apparent position changes as Earth rotates. Here you move an illustrated Sun to explore one idea: on flat ground, shadow length depends on how high the Sun is, and its direction is opposite the Sun.
See all three answers
A short shadow to the left
Try raising the Sun on the right.
For the same upright post on flat ground, a higher Sun makes a shorter shadow.
A long shadow to the right
Try putting the Sun low on the other side.
Change the Sun’s side and the shadow changes sides too. A shadow points away from the light source.
The science and the drawing
A simplified side view, not a clock, compass or real Sun path for your location. The Sun and post are drawn at convenient sizes.
Original LifeHubber artwork and game. NASA-hosted archived lesson: Sun elevation and shadows.
Light and what we see · A little game
Moon Match
Why does the Moon seem to change shape? Move the Moon around Earth. Match the little view seen from Earth.
The interactive game needs JavaScript. You can still explore the illustration and open the answers below.
Round 1 of 3
A waxing crescent
Match this view
Your view from Earth New Moon
Slide, tap the track, or use the arrow keys. Each stop is a different orbit position.
No hurry. Try a position, then check your match.
From reflected sunlight to an animal that makes its own light.
Follow sunlight down into the ocean → Choose another learning pathThe little idea behind the game
One Moon. Sunlight. A changing view.
Moonlight is reflected sunlight. As the Moon orbits Earth, we see different amounts of its sunlit half. Waxing means the visible bright portion is growing; waning means it is shrinking.
See all three answers
A waxing crescent
Try a position near the Sun’s side of Earth, then compare the bright slice.
A crescent is a small visible part of the Moon’s sunlit half. The Moon itself has not changed shape.
A full Moon
Try the side of Earth opposite the Sun.
At full Moon we see the sunlit half facing us. Ordinary phases come from our changing view, not Earth’s shadow.
Third quarter
Try the other side-on position. Which half looks bright?
A quarter Moon looks half lit from Earth. “Quarter” refers to its place in the phase cycle, not how much of the face looks bright.
The science and the drawing
A simplified phase model, not today’s Moon or a sky map. The orbit is shown from above Earth’s north pole; the phase pictures use a north-up viewing convention. Their tilt can look different from your location. Sizes and distances are not to scale. The tilted orbit and eclipses are not shown. The dim outline lets you track the Moon even when its near side is unlit; it is not a picture of how visible a new Moon is in the sky.
Original LifeHubber artwork and game. NASA Space Place: what makes the Moon’s phases.
A lunar eclipse is a separate event: Earth’s shadow falls on the Moon. It does not happen at every full Moon because the Moon’s orbit is tilted. NASA: eclipses.
A little water wonder
Follow a little drop.
Sea, sky, snow… where could water wander?
Still picture: your reduced-motion setting is on.
Water has many possible paths. It can linger in the sea, clouds, snow or ground. These stops are an invitation to explore, not a fixed route or a weather forecast.
Read every stop
Sea: A sunny beginning.
Heat from the Sun helps liquid water evaporate into water vapour. It can leave the sea without boiling.
The guide is in the sea.
Air: Where did the water go?
Water vapour is an invisible gas. Our dotted guide shows a possible path through the air; it is not a visible drop floating up.
Water vapour is invisible. The dotted guide is a symbol.
Cloud: A cloud is a gathering.
When moist air cools, water vapour can condense into tiny liquid droplets. Clouds can also contain ice crystals. These small droplets and crystals make the cloud visible.
The guide is inside a cloud.
Rain: Back towards the ground.
Cloud droplets or ice crystals can grow large enough to fall. Rain brings liquid water to the surface. Some flows over land; some soaks in.
The guide is falling as rain.
Snow: A place to linger.
Precipitation can fall as snow. Water may stay in snow and ice for a while. When snow melts, some water runs over land and some soaks into the ground.
The guide is resting in snow.
River: A winding way home.
Water running downhill can join streams and rivers. Some eventually reaches the sea. Along the way, water can also evaporate, soak into the ground or be stored.
The guide is in a river.
Underground: Small spaces, hidden water.
Water can soak into soil and rock, filling pores and cracks. Some stays underground for a long time; some returns to streams or the sea. Our picture shows water in small spaces, not one big underground river.
The guide is among water-filled underground spaces.
The science behind the journey
Our artwork and words are original. The U.S. Geological Survey's Water Science School explains the processes behind them.
A little wonder
Look closer.
Three tiny mysteries. What do you notice first?
Our illustrated landscapes show real Earth patterns. They are drawings, not satellite images or real locations.
Why so many branches?
Trace one blue line. Where does it split?
A little clue?
These lines carry something. It can leave grains behind when it slows down.
Reveal the wider picture
A river making a delta.
As a river enters a lake or sea, it can slow down and leave sediment behind. Those deposits can build land and change the paths water takes. Over time, a delta can spread into branching channels.
Look again: one river becomes several paths toward open water.
NASA: how a river delta branches Try reading snow patterns from space
Who made these ridges?
Follow a pale crest and the darker slope beside it.
A little clue?
No rake needed. Think of something that can move loose grains.
Reveal the wider picture
Sand, shaped by wind.
Wind can carry loose sand and pile it into dunes. A dune field is a landscape of these mounds, with crests and slopes catching the light. Different winds and sand supplies can make different dune shapes.
Look again: the bright edges and shaded slopes help you read the shape.
National Park Service: wind-shaped landforms Try another view from above: snow from space
Why do these rows repeat?
Look at the spaces as well as the soft white shapes.
A little clue?
The pattern is above the water. Air can rise in some places and sink in others.
Reveal the wider picture
Rows of clouds, called cloud streets.
Cloud streets can form when cold air moves over warmer water. Heat and moisture help air rise in long, rolling bands. Clouds form on the rising sides; the sinking sides stay clearer. The rows can line up with the wind.
Look again: the clear gaps are part of the pattern too.
NASA: the science of cloud streets Another sky curiosity: aurora light
Ocean discovery · Light and life
Who lights up the deep ocean?
Travel below the sunlight, then watch a shrimp leave a cloud of light.
Follow the light down
Surface to about 200 metres
Sunlight reaches into the water.
This upper layer receives enough light for photosynthesis. As you descend, the light fades.
About 200–1,000 metres
A little daylight. Less and less.
Only a small amount of sunlight reaches this zone. There is too little for photosynthesis.
Below about 1,000 metres
Sunlight has faded away. Life hasn’t.
Some animals here produce their own light through a chemical reaction. That living light is called bioluminescence.
These are broad light zones. Water conditions affect how far sunlight reaches; the illustration is not to scale. Bioluminescence also occurs in shallower water.
Meet a shrimp that releases lightWatch for one thing
One shrimp. A cloud of light.
Press play. Watch the light after the shrimp moves away.
Does it stay on the animal, or spread into the water?
What am I seeing?
The shrimp releases glowing material into the water, leaving a bright cloud behind. In this recording, the release is part of its escape response after contact with the camera system.
That is one animal’s behaviour. Other animals use light in different ways, and many of those uses are still being studied.
How the glow happens
A chemical reaction makes light.
Bioluminescence releases energy as visible light. It does not need light to shine on the animal first. Fluorescence works differently: it absorbs incoming light and gives some of it back in another colour.
Chemical reactionLight
Reading the real world
Put your curiosity on a source map.
Earth, sky, space. Choose a map and see what catches your eye. HantaData news signals are available on the main map.
Beneath our feet
Recent Earthquakes
See recent USGS reports, then learn what their magnitude and depth mean.
NASA EONET layer
Natural Events
Explore NASA EONET records of wildfires, storms, volcanoes and landslides.
NOAA SWPC layer
Aurora Forecast
See the glow in NOAA’s aurora forecast. It is a model, not a sighting or a viewing promise.
News signal layer
Hantavirus Signals
HantaData news-signal records shown as source context, not case counts, official health guidance, or confirmed medical surveillance.
NASA/JPL CNEOS layer
Meteor Fireballs
Where was a meteor brightest? Follow NASA/JPL CNEOS records with reported atmospheric locations.
Visual companion
Earth from space
Look for snow in NASA GIBS satellite imagery. These are images, not event reports or alerts.
Layer meaning
How the layers differ
Open the map reading guide
Earthquake dot
USGS event point
A source-reported event point from USGS, with magnitude, depth, time, and location.
Natural event dot
NASA EONET source record
A NASA EONET source record. Some area or line records may use approximate center markers for readability.
Aurora glow
NOAA modelled grid value
A NOAA SWPC modelled forecast grid value shown as a soft glow, not a precise event pin.
HantaData dot
News-signal record
A HantaData news-signal record. Some markers use approximate country-level placements when source detail is limited; they are not case locations.
Fireball dot
NASA/JPL CNEOS source record
A public fireball record with a source-reported peak-brightness location where available.
Satellite image
NASA GIBS visual imagery
A public imagery layer for broad visual context, not an event record or forecast point.
Reading limits
Read with source context
LifeHubber Earth is for curiosity, source records, and simple explanations. It does not make official guidance, safety-critical recommendations, medical advice, or LifeHubber-made risk rankings.
For safety decisions, use official local authorities and the original source pages.
Earth dashboard
Back to the planet.
Choose a layer, select a dot, and follow its source details.