Video Archive

  • Hubble’s Contentious Constant

    There are two leading ways to measure the universe’s rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.

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  • Chang’e-4 Lunar probe is on its way to the moon

    Last week we talked about the Chinese Chang’e-4 lunar probe that China was set to launch to study the far side of the moon. The probe launched in the early hours of Saturday morning and that lunch went off without a hitch. China sent the probe towards the moon atop a Long March-3B rocket.

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