Questions & Answers about Mereka belajar tentang angkasa.
Mereka means they when talking about people. It does not show gender, so it can refer to men, women, or a mixed group.
A useful point: mereka is normally used for people, not for things or animals in the way English they can be.
Belajar can mean both learn and study, depending on context.
In this sentence, it is most naturally understood as study or are learning:
- Mereka belajar tentang angkasa. = They are studying/learning about space.
Malay often uses the same verb where English might choose either learn or study.
Tentang means about.
So:
- belajar tentang angkasa = study/learn about space
This is a very common pattern in Malay:
- belajar tentang sejarah = study about history
- belajar tentang haiwan = learn about animals
If you leave out tentang, the sentence may sound incomplete or unnatural in this meaning. Another possible way to express the idea is:
- Mereka mempelajari angkasa. = They study space.
That version is a bit more formal or bookish.