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During the IGY (which lasted more like 20), it was first noticed that the surface of the ocean had bulges of a sort, due to the differences in density of strata below the seafloor. :^) For good measure, I've included the usual Potsdam Gravity Potato keyword topic list. :^)

Scientists Discover 'Sunken Worlds' Hidden Deep Within Earth's Mantle [01/20/2025]
Mysterious Submerged 'Lost World' Discovered Beneath the Pacific Ocean Stumps Scientists [01/13/2025]
Study Suggests First Polynesians in New Zealand Planted Sweet Potatoes [10/02/2024]
New research finds Earth's core slowed so significantly it reversed course, scientists not exactly sure of effects [07/08/2024]
Earth's rotating inner core is starting to slow down -- and it could alter the length of our days [06/29/2024]
It's Official: The Rotation of Earth's Inner Core Really Is Slowing Down [06/14/2024]
Scientists discover remains of a 'buried planet' deep inside EARTH [05/07/2024]
New Research Sheds Light on Moon's Mysterious Seismic Activity [02/27/2024]
Mars Is Spinning Faster: NASA's InSight Uncovers Surprising Acceleration [08/08/2023]
For the 1st time, scientists confirm the moon has a solid iron 'heart' just like Earth [05/07/2023]
'Significant Global Event From The Past': Scientists Get Shocking Evidence From Earth's Inner Core [02/22/2023]
CAPSTONE Becomes First Probe to Enter Unique Halo Orbit Around the Moon [11/14/2022]
Geologists Have Closely Analyzed Two Bizarre 'Blobs' Detected Deep Inside Earth [03/11/2022]
Wild New Paper Suggests Earth's Tectonic Activity Has an Unseen Source [01/27/2022]
Recordings of the magnetic field from 9,000 years ago teach us about the magnetic field today [12/11/2021]
NASA's New X-Ray Telescope Is A Revolution in Astronomy and Launch Profiles [SpaceX, Van Allen Belt, South Atlantic Anomaly] [12/11/2021]
Is Earth's core lopsided? Strange goings-on in our planet's interior [06/05/2021]
How long is a day on Venus? It's always changing, new study reveals [05/11/2021]
Vast Fragments of an Alien World Could Be Buried Deep Within Earth Itself [03/25/2021]
Scientists Detect Signs of a Hidden Structure Inside Earth's Core [03/04/2021]
The spacecraft-killing anomaly over the South Atlantic [02/20/2021]
The Herky-Jerky Weirdness of Earth's Magnetic Field [12/23/2020]
Earth Keeps Pulsating Every 26 Seconds. No One Knows Why. [11/04/2020]
NASA Is Tracking a Vast, Growing Anomaly in Earth's Magnetic Field [08/18/2020]
Search for MH370 Revealed Ocean Crust Waves [06/12/2020]
Scientists detect unexpected widespread structures near Earth's core [06/12/2020]
Part of Earth's Magnetic Field is Getting Weaker in 'Vigorously' Developing Anomaly, Scientists Say [05/22/2020]
Rapid Drift of Magnetic North Explained [05/19/2020]
Something Strange Sends Tech Haywire at Earth's Poles, And NASA Wants to Know More [11/30/2019]
How Earth's mantle is like a Jackson Pollock painting [05/21/2019]
The Nippon Foundation-GEBCO Seabed 2030 Project [12/30/2018]
Scientists model Mercury's glaciers [12/28/2018]
Earth's Second Magnetic Field: Satellite Image Reveals Invisible Force From Ocean Currents [04/12/2018]
US Navy locates crashed plane deep on Pacific seabed [01/06/2018]
Juno Finds that Jupiter's Gravitational Field is "Askew" [10/27/2017]
New Seafloor Map Reveals How Strange the Gulf of Mexico Is [05/27/2017]
The Search for MH370 Revealed Secrets of the Deep Ocean [03/12/2017]
Earth's Magnetic Field is Changing [12/23/2016]
Scientists find 500 U.S. seabed vents of powerful greenhouse gas [10/21/2016]
Vast asteroid created 'Man in Moon's eye' crater [07/20/2016]
Seabed Scanning for East Anglian windfarm reveals Uncharted WWI German Submarine [01/25/2016]
Ocean Search for Malaysian Airliner Finds 2nd Shipwreck [MH370] [01/14/2016]
Seabed Gives Up Spanish Armada Wreck Cannons [06/18/2015]
MH370 search discovers a shipwreck not the missing plane [05/13/2015]
Astronomy Picture of the Day -- Gravitational Anomalies of Mercury [05/05/2015]
Ice age polarity reversal was global event: [04/06/2015]
Inconvenient study: Methane seepage from the Arctic seabed has been occurring for millions of years [02/07/2015]
Seafloor volcano pulses may alter climate: [02/05/2015]
AirAsia QZ8501: Plane tail lifted from seabed [01/10/2015]
Astronomy Picture of the Day -- The Potsdam Gravity Potato [12/15/2014]
Potato Earth: Gravity satellite reveals what our planet REALLY looks like [03/31/2011]
Air France 447 electrical problems and the South Atlantic Anomaly [06/05/2009]
The Moon reveals its weirder side - SELENE mission reports on gravity anomalies. [02/16/2009]
Satellites Solve Mystery Of Low Gravity Over Canada [05/11/2007]
Does a giant crater lie beneath the Antarctic ice? [06/05/2006]
Exploring The Ocean Basins With Satellite Altimeter Data [03/28/2005]
Gravity variations predict earthquake behavior [08/04/2003]
'Potato' Earth's Deep Secrets (Gravity Map) [07/24/2003]
Mysterious Shift in Earth's Gravity Suggests Equator is Bulging [08/01/2002]
Astronomy Picture Of The Day : A Gravity Map of Earth [11/13/2001]