Travelers In The Night11 Mar 2025

327E-346-Arctic Ice

Eliminating NASA's climate research programs is a bit like someone who has a CT scan which reveals a health problem demanding that the CT scan machine be destroyed instead of looking for a cure for themselves. On March 7, 2017 the Arctic Sea ice reached a record low wintertime maximum extent. The maximum Arctic ice cover in 2017 was about a half million square miles smaller than the average for 1981 to 2010. From the first satellite observations in 1979 till 2017 the Arctic sea ice cover has continued to get smaller and thinner making it more easily disrupted by ocean currents, winds, and warmer temperatures than ever before. Even so it appears that it will be a while before ships begin to make the long sought northwest passage from Europe to Asia. At the opposite end of the Earth on March 3, 2017, the end of summer sea ice around Antarctica was at the lowest extent ever observed by satellites. This surprising result followed several decades of moderate sea ice growth. It will take a few more years of data to determine if there has been a significant change in the trend of Antarctic ice sheet growth. Cutting funding for NASA's observations and analysis of the changes happening on Earth will not stop human activity from warming our planet's atmosphere. Get ready, changing the ocean surface from ice to open water is likely to have a significant, complex, and hard to predict impact on weather and climate.

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Episoder(1000)

404E-445-Not So Secret

A partnership of humans and computers will help to minimize the damage when asteroid hunters find a space rock with our number on it.

1 Sep 2min

914-Deep Synoptic Array

Looking into the sky at night with radio eyes you would not see the points of starlight forming the constellations instead you would see a very bright, colorful and wildly changing scene. In a desert ...

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403E-444-Near Comets

Although no comet nucleus impact on the Earth has been conclusively identified, there is some evidence that suggests the 1908 Tunguska event in Russia, which knocked down trees over a 770 square mile ...

25 Aug 2min

913-Moon Impact

Bill Gray is an astronomer who specializes in tracking objects in space which come near the Earth. In addition to natural objects like asteroids and comets Bill also tracks rocket boosters and space j...

21 Aug 2min

402E-443-Unsung Heroes

In 2017 observers in 50 countries at 440 different observatories made nearly 19 million observations of asteroids and comets which enable scientists to calculate where about 800,000 objects will be in...

18 Aug 2min

912-Boston Bolide

Recently on a Saturday afternoon a loud double booming sound startled residents of Massachusetts and Rhode Island as a large bolide meteor exploded high above. This type of space rock is a message fr...

14 Aug 2min

401E-442-Brian's Debut

During the only 3 clears hours of his first night solo as an asteroid hunter, my new Catalina Sky Survey teammate Brian Africano discovered two new Earth approaching asteroids with our Schmidt Telesco...

11 Aug 2min

911-Comet Brightness Explosion

Comet 220P/McNaught orbits the Sun once every 5.5 years on a path which is between Mars and Jupiter. At that extreme distance, more than 1.5 times the Earth’s distance from the Sun, it still receives ...

7 Aug 2min