2.7K views · 291 reactions | Since NASA opened for business in 1958 it has used a variety of instruments to study space and the heavenly bodies that inhabit it. Do you know how many planets in this solar system have been observed by NASA spacecraft in those years? | NASA's Johnson Space Center | Facebook

1.9M views · 43K reactions | How well do you know our planets? 敖 All the planets in our solar system vary in size and distance from the sun, but just how different are they? | BBC Earth | Facebook

3.9K views · 84 reactions | The Al-Ghariba Synagogue in Djerba, Tunisia, not only stands as a testament to the region's Jewish history but also reflects the peaceful coexistence between Muslim and Jewish communities. This harmonious relationship is exemplified during events like the Lag Ba'Omer festival, where both communities come together in celebration. | THE PLANET DISCOVERY | Facebook

8.4K views · 566 reactions | The Medina of Kairouan is a UNESCO World Heritage site and one of the oldest Islamic cities in the world. #DiscoverKairouan #Tunisia #HolyCity #UNESCO #WorldHeritageSite #GreatMosque #AghlabidBasins #History #culture | THE PLANET DISCOVERY | Facebook

Narrated by Sir David Attenborough, new series A Perfect Planet shows how weather, ocean, currents, volcanoes, and solar energy all contribute to Earth’s diversity. Watch this and more from the greatest collection of BBC natural history programs now streaming on discovery . Available in US only. | The Dodo