speeds

Debris From Kepler’s Supernova Still Traveling At High Speeds After 400 Years

KEY POINTS

  • Kepler’s supernova remnants still moving at high speeds 400 years after the explosion
  • The remnants are moving at speeds of 20 million miles per hour
  • That’s 25,000 times faster than the speed of sound on Earth

Astronomers have found that the debris from a supernova blast is still moving at extremely high speeds some 400 years after the blast was first observed from Earth.

It was in 1604 that early astronomers, including Johannes Kepler, first observed the supernova explosion we now know as Kepler’s Supernova, some 20,000 light years away in the Milky Way. At the time, its greatest apparent magnitude was about -2.5, making it brighter than Jupiter. But by 1606, it was no longer visible to the naked eye.

Today, astronomers still get to observe the phenomenon through advanced means such as NASA’s Chandra X-ray Observatory.

In a recent study published in The Astrophysical Journal, astronomers

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With time extension stalled, Census speeds up count schedule

ORLANDO, Fla. (AP) — The U.S. Census Bureau sped up the timetable for crunching 2020 census numbers on Friday after an earlier request for an extension stalled in the Senate and as pressure mounts to turn in data used to determine congressional districts by year’s end, when President Donald Trump is still in office.

On its website Friday, the bureau listed the deadline for processing data used to apportion the districts as Dec. 31. As recently as Thursday, it had listed a time frame of Oct. 31, 2020 to April 30, 2021 — an estimate based on a request for an extension that it submitted to Congress in April.

Census experts and civil rights activists worry the sped-up deadline could affect the thoroughness of the count, which determines how $1.5 trillion in federal spending is distributed and how many congressional districts each state gets.

“The rapidly changing census schedule is

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