Yes. The Solar System map, planet pages, Earth layers tour, and quizzes are free. You can play without creating an account.

What can I do in the Solar System explorer?

Click the Sun and all eight planets, read facts, compare worlds, open a 3D Earth globe, and take short science quizzes on each planet page.

What are the Earth and space layers?

The layers experience covers atmospheric zones from the troposphere up to outer space, and Earth's interior from the crust down to the inner core, with facts and quick quizzes at each stop.

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Explore

Choose your journey

Two interactive experiences - tour the Solar System or peel back Earth from atmosphere to core.

Solar System

Fly through our cosmic neighbourhood - click the Sun and all 8 planets, discover facts, take science quizzes, and open a 3D Earth globe.

Animated orbits Planet quizzes 3D Earth globe

Enter Solar System →

Earth & Space Layers

Tunnel through 7 sky layers or 5 Earth interior zones - per-layer facts, quick quizzes, auto tour, and a clickable 3D globe at the surface.

Layer quizzes Auto tour 3D globe

Explore Layers →

Free interactive science exploration

Explore is Quizzes for Brain's hands-on science zone. Move through the Solar System, open detailed planet pages, or travel vertically through Earth's atmosphere and interior - with quizzes at every stop.

Solar System map

Animated orbits, planet compare, dwarf planets, and links to fact pages.

3D Earth globe

Rotate the globe and explore countries with geography quizzes.

Layer journey

Scroll upward into space or inward toward the core with per-layer quizzes.

Built-in quizzes

Planet pages and layer stops include science questions you can try instantly.

Planet fact pages

Jump straight to any world for atmosphere, missions, and a short science quiz.

Sun Our star - fusion, sunspots, and the source of all solar energy. Mercury Smallest planet, extreme temperatures, and a cratered surface. Venus Thick CO₂ atmosphere and the hottest surface in the Solar System. Earth The only known world with life, oceans, and a protective magnetosphere. Mars The Red Planet - volcanoes, ancient river valleys, and two small moons. Jupiter Gas giant with the Great Red Spot and more than 90 known moons. Saturn Famous rings made of ice and rock orbiting a pale gas giant. Uranus Ice giant tipped on its side, with faint rings and 27 moons. Neptune Windiest planet - deep blue colour and a moon named Triton.

Open full Solar System explorer →

Earth & space layers you'll visit

Real atmospheric zones above Earth and geological zones beneath your feet.

Up to space

Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere
Outer space

Into Earth

Crust & Surface
Upper Mantle
Lower Mantle
Outer Core
Inner Core

Start the layer journey →

Common questions

Is Explore free?

Yes. The Solar System map, planet pages, Earth layers tour, and quizzes are free - no account required.

Do I need to install anything?

No. Everything runs in your browser. A modern phone, tablet, or desktop browser is enough for the 3D views and quizzes.

What's the difference between Explore and regular quizzes?

Topic quizzes are MCQ practice sets. Explore adds interactive maps, layer journeys, and planet deep-dives with visuals and facts alongside quizzes.

Can teachers or parents use this?

Yes. Planet pages and layer facts work well for homework introductions, and the built-in quizzes give a quick knowledge check afterward.

All quiz topics Daily challenge Astronomy & Space Earth Science & Geology General Geography