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ScienceHigh School 4.9 · 6,900

Astronomy

Explore the solar system and beyond: planets, the Sun, and the life cycle of stars.

Dr. Omar Haddad, Astronomer

Dr. Omar Haddad

Astronomer

Course progress0 / 4 lessons
1

The Solar System

The Sun, planets, and orbits.

8 min +55 XP2 quiz questions
2

Stars & Their Life Cycle

How stars shine and change.

9 min +60 XP2 quiz questions
3

Galaxies & the Expanding Universe

The big picture, and how we know it.

9 min +55 XP2 quiz questions
4

Black Holes & Gravity

When gravity wins completely.

9 min +60 XP2 quiz questions

Common questions

Who is "Astronomy" for?

It is written for learners at High School level (Grades 9–12), and for anyone older who wants a clear refresher on science. Explore the solar system and beyond: planets, the Sun, and the life cycle of stars. There is no application or entry test — you can start the first lesson straight away.

How long does the course take?

There are 4 lessons totalling 35 minutes of reading and quizzes, laid out over 2 units. You can move at your own pace — progress is saved as you go.

What do I need to know before starting?

No prior coursework is assumed. The course opens with "The Solar System", covering planets and orbits, so the foundations are built in rather than expected.

Is the course free?

Yes. Every course on Monster Class is completely free, with no credit card, trial period or paywall. Creating a free account simply saves your progress, XP and place on the leaderboard across devices.