Lawrence Krauss talks the end-life of Cassini and the infinite abyss

Intergalactic travel celebrated two major milestones this month: Voyager 1’s 40th year in space, and the end-life of the Cassini spacecraft.

Lawrence Krauss, a theoretical physicist at Arizona State University, spoke with Arizona Horizon about the similarities between the two missions. Cassini was launched into Saturn’s orbit in 1997 by NASA, the European Space Agency and the Italian Space Agency. It was discovered through Cassini that Saturn has 62 moons   half of which were unknown to the science community.

Voyager 1, also launched by NASA, celebrated its 40th anniversary in space on Sept. 5, where it is currently  20.8 billion kilometers from the earth. Voyager 1 passed Saturn in 1980 and is the most distant human-made object in space.

The main difference between the two crafts, according to Krauss, are their lifespans. Voyager 1 will continue its journey indefinitely, whereas Cassini will self-destruct on Sept. 15.

Sponsor message:

In this segment:

Lawrence Krauss: Physicist, ASU

Sponsor message:

The Nutcracker and the Mouse King

John Mauceri conducts his orchestra

Conceived by John Mauceri, this new work is a re-imagination of Tchaikovsky’s holiday favorite, "The Nutcracker."

The Heartless

The Heartless performing in Arizona PBS' studio

The Heartless – a band originally formed in Tempe in 2004 – brought their songs "Unbelievable" and "Uno Mas" to Arizona PBS' studios.

Austin City Limits “Olivia Rodrigio/Phoebe Bridgers”

Oliva Rodrigo and Pheobe Bridgers performing

Enjoy fresh perspectives in song from chart-topping Olivia Rodrigo and critically acclaimed Phoebe Bridgers on "Austin City Limits."