It is already stated by Allah in Al-Quran in Surah Al-Baqarah:
2: 2. This is the Book; in it is guidance sure, without doubt, to those who fear Allah;
2: 3. Who believe in the Unseen, are steadfast in prayer, and spend out of what We have provided for them;

The " the Unseen" statement of Allah is actually how we muslims really differ from non-muslims. Because we already believe these unseen (ghaiib) entities in our universe 1400 years ago, long before today that modern scientists and cosmologist discover. Dark matters and dark energies are just few from unseen entities we humans may discover some of them or may never will be discovered.