50 Years After Apollo, Our Moon Is Still Mysterious
July 16, 2019
Scientists in the 1960s were confident that the moon missions would solve their problems with lunar origins.
Space Aliens Still AWOL
June 20, 2019
Aliens should be everywhere, but the heavens remain eerily silent. The faith goes on.
Saturn’s Rings Not Just Young, but “Very Young”
January 18, 2019
Cassini scientists now have reduced the rings' age by an order of magnitude, as if they formed practically "yesterday."
Van Allen Belts Protect Earth from Solar Wind
June 11, 2018
Geophysicists are still puzzling over how the earth's magnetic field and Van Allen radiation belts protect the surface from deadly particles in the solar wind.
Did Earth Get Its Water from Meteor Squirt Guns?
April 28, 2018
You can't just fire bullets at pumice and claim that Earth got its oceans that way.
Our Solar System Appears Odd to Astronomers *
January 29, 2018
Our solar system is an oddball, conclude astronomers who looked at hundreds of planetary systems around other stars. *Audio version available.
Planetary Youth Continues After Cassini
December 19, 2017
The data gathering phase is over, but the data mining phase will continue for years. This entry also shares some news about other solar system objects showing youthfulness.
Planet Party Busted by Triton
November 16, 2017
Theories can be like parties with tantalizing speculations until big, whopping anomalies spoil the fun.
Trending: Moons With Oceans
October 14, 2016
Europa has one. Enceladus has one. Titan might have one. Now, it seems every moon wants an ocean under its crust.
Why Astronomers Hammer Planets
September 6, 2016
Secular planetary scientists have a skeleton key that unlocks any planetary mystery: the BFH.
Juno How Old the Solar System Is?
July 6, 2016
Everyone knows the solar system is 4.5 billion years old. Everyone, that is, except Nature herself.
Underground Oceans Can't Last Forever
June 29, 2016
If Pluto and Enceladus have oceans under the crust, why are they still liquid after billions of years?
Titan Ethane Still Missing, and Other Planetary Puzzles
May 7, 2016
We update the problem of Titan's missing ethane and other challenges to billions of years.
Solar System Is Weird Only if It Is Old
March 14, 2016
To someone who believes the solar system is billions of years old, no wonder its contents look weird.
Hot Jupiters Exasperate Astronomers
February 24, 2016
Nothing has been more upsetting to comfortable theory than the discovery of hot Jupiters around other stars.