Tag Archives: accelerating

  NASA launched the Voyager probes more than 40 years ago, and the fact we’re still talking about the impact of these spacecraft is a testament to how well-planned these missions were. Both Voyager 1 and 2 are outside the solar system now, but there’s plenty to see out there …

Type Ia supernovae are affectionately called “standard candles” in astronomy. They’re blessedly predictable, so we use them to measure distances. The 2011 Nobel Prize in Physics went to three astronomers who used standard candles to reach the same conclusion based on the same data: namely, that the universe is expanding …