Many people wonder if aliens exist. Scientists are working to find answers. A NASA grant helps astrophysicist Adam Frank study technology on other planets.
Since 1995, scientists have discovered over 4,000 exoplanets. Some of these planets could have life. To find out if life is there, researchers look for biosignatures—signs that life may exist.
They also think about technosignatures, which are signs of intelligent life and their technology. This research could help us understand if aliens are real.
Difficult words
- discover — to find something new or not known before.discovered
- exist — to be real or alive.
- research — the study of a subject to find new information.
- technology — tools or methods used to solve problems.
- scientists — people who study science and make discoveries.
- answers — solutions to questions or problems.
- planets — large objects that move around a star.
- intelligent — able to think and understand well.
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Why do you think people are interested in aliens?
- How can studying exoplanets help us?
- What do you think intelligent life might be like?
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