Collecting Soil from Asteroids

Most people don’t know that we have sent out two missions to asteroids that will bring back soil samples! Now that’s no small feat — the asteroids are moving at a speed of 25 Km/s — their speed varies based on their distance from the sun. Meanwhile, the two spacecraft are entering the orbit of the asteroids, identifying sample sites, collecting soil samples, leaving the orbit, sending data back to earth and of course bringing back those soil samples.

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Did Marconi Invent the Radio?

Chances are that radio and television have been the go to activities for many of you during isolation. And let’s not forget video and audio podcasting. Thank god for that — or should we be thanking Marconi? Well, there were others before Marconi, in fact 80 years of science led to him. So, today we are going to talk about all things radio. Radio waves, radio transmission, even radio astronomy.

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Persepolis — City of Persians

Around 60 km northeast of Shiraz, at the foot of the Koh-e-Rahmat (Mountain of Mercy) in Iran, lie the ruins of one of the greatest cities of the Achaemenid Empire: Persepolis.

Known as Parsa in Old Persian (meaning city of Persians) and Takht-e-Jamshed in modern Persian, Persepolis is now a UNESCO World Heritage site, designated as such in 1979.

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