Tag Archives: Earth

Time flies in Google Earth’s biggest update in years

Rebecca Moore, Director, Google Earth, Earth Engine & Outreach, Published Apr 15, 2021

From article.. Google

Read this post in Spanish. // Blog en español aquí.

For the past 15 years, billions of people have turned to Google Earth to explore our planet from endless vantage points. You might have peeked at Mount Everest or flown through your hometown. Since launching Google Earth, we’ve focused on creating a 3D replica of the world that reflects our planet in magnificent detail with features that both entertain and empower everyone to create positive change.

In the biggest update to Google Earth since 2017, you can now see our planet in an entirely new dimension — time.

–from article

With Timelapse in Google Earth, 24 million satellite photos from the past 37 years have been compiled into an interactive 4D experience. Now anyone can watch time unfold and witness nearly four decades of planetary change. 

Source: Time flies in Google Earth’s biggest update in years

Climate Change Has Knocked Earth Off Its Axis

Brian Kahn, Friday 5:12PM

A 3D portrait of methane concentrations and a slightly wobblier Earth.
Image: NASA

Of all the things attributable to climate change, the rotational poles moving differently is definitely one of the weirder ones. But a new study shows that’s exactly what’s happening. It builds on previous findings to show that disappearing ice is playing a major role, and shows that groundwater depletion is responsible for contributing to wobbles as well.

The findings, published last month in Geophysical Research Letters, uses satellites that track gravity to track what researchers call “polar drift.” While we think of gravity as a constant, it’s actually a moving target based on the shape of the planet. While earthquakes and other geophysical activities can certainly play a role by pushing land around, it’s water that is responsible for the biggest shifts. The satellites used for the study, known as GRACE and GRACE-FO, were calibrated to measure Earth’s shifting mass

Source: Climate Change Has Knocked Earth Off Its Axis