More like 0.001%.ĮRIC: So you mentioned you'd need an infinite amount of energy to get mass to go the speed of light. So it's not that far in the grand scheme of things.ĮRIC: So it's not like 1% of the speed of light with our spaceships. And it's been traveling for over 40 years at like 10 miles per second. Yeah, the farthest spacecraft that humans have ever sent out into space, Voyager 1, is something like 20 light hours away from us. Yeah, to get any object that has mass moving at the speed of light would require an infinite amount of energy.ĮRIC: So the things that we've sent other places in the universe, our spaceships, stuff like that is not like, close to the speed of light but we can't go any faster. It's kind of like the speed limit of the universe.ĬAITY: Exactly. So if you want to think about that in a little bit more relatable terms, if you could travel at the speed of light, you could travel around the Earth seven and a half times in a second.ĮRIC: That's super fast. So the fastest thing in the universe is light.ĮRIC: So not an actual object, just: light is super fast.ĬAITY: It is about 186,000 miles per second. What's the fastest thing in the universe? Joining me to chat about how fast things are is Caity, from our very own Charles Hayden Planetarium.ĬAITY: Hi, thanks for having me. Extremes tend to be popular when we ask for questions in our virtual programs: the largest shark, the oldest crater, and today's question is no different.
ERIC: From the Museum of Science in Boston, this is Pulsar, a podcast where we search for answers to the most fantastic questions we've ever received from visitors.
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