Section 1

Explore the Wonders of the Universe

No matter where you live – in a sprawling city or a vast expanse of wilderness – bright points of light in the night sky have almost certainly caught your attention. But not everything we see are single stars – some are planets in our own solar system, others are two stars orbiting one another again and again. Or, if you spot a fuzzy cloud in the night sky, it might be a dust patch where new stars are forming, like the Orion Nebula in the Orion Constellation. Under the right conditions, you can also see beyond the stars in our own Milky Way galaxy and gaze at the expansive Andromeda Galaxy. Occasionally, you can catch a comet zipping past Earth.

You could explore the cosmos for the rest of your life and never stop learning new, captivating details. For example, how many stars are out there? How many stars make up galaxies? How many galaxies make up the universe? These, of course, are only a few questions you might ask! Humans have studied the cosmos for centuries. With our current suite of advanced space- and ground-based telescopes, we have answers to these and many, many more queries. Like us, scientists are always asking new questions. And we benefit from their ever-expanding research since it helps us better understand how everything in the universe works. Explore content from NASA’s Universe of Learning – and begin to envision yourself as a scientist!

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