At this writing, the National Emergency Management Agency of New Zealand is still warning people to stay away from harbors, rivers and estuaries. Source: https://earthsky.org/earth/earthquake-new-zealand-march-4-5-2021-tsunami-warning…
Tag: waves
Giant iceberg breaks off Brunt Ice Shelf in Antarctica
A giant iceberg, about twice the size of Chicago, broke off from Antartica’s Brunt Ice Shelf in late February 2021. Source: https://earthsky.org/earth/giant-iceberg-breaks-off-antarctica-brunt-ice-shelf…
Hoinga: Debris of stellar explosion found in unexpected location
In the first all-sky survey by the eROSITA X-ray telescope onboard SRG, astronomers at the Max Planck Institute for Extraterrestrial Physics have identified a previously unknown supernova remnant, dubbed “Hoinga.” The finding was confirmed in archival radio data and marks the first discovery of a joint Australian-eROSITA partnership established to explore our Galaxy using multiple wavelengths, from low-frequency radio waves to…
Gulf Stream at its weakest in over 1,000 years
A new study suggests that the Gulf Stream – an Atlantic Ocean current that plays a large role in shaping Earth’s weather patterns – is weaker now than at any point in the last 1,000 years. Source: https://earthsky.org/earth/gulf-stream-atlantic-weakest-in-over-1000-years…
Astrophysicist’s 2004 theory confirmed: Why the Sun’s composition varies
About 17 years ago, J. Martin Laming, an astrophysicist at the U.S. Naval Research Laboratory, theorized why the chemical composition of the Sun’s tenuous outermost layer differs from that lower down. His theory has recently been validated by combined observations of the Sun’s magnetic waves from the Earth and from space. Source: https://phys.org/news/2021-03-astrophysicist-theory-sun-composition-varies.html…
What is a quasar?
A quasar is an extremely bright and distant point-like source visible to radio telescopes. The source is a so-called Active Galactic Nucleus, fueled by a supermassive black hole. Source: https://earthsky.org/astronomy-essentials/definition-what-is-a-quasar…
What’s the coldest Earth has ever been?
Our planet’s history includes episodes of cold so extreme that glaciers reached sea level in equatorial regions. Source: https://earthsky.org/earth/whats-coldest-earth-has-ever-been…
Google uses underwater fibre-optic cable to detect earthquakes
A team including researchers at Google has used one of the search giant’s underwater fibre optic cables to detect earthquakes and ocean waves generated by storms, without needing any extra equipment Source: https://www.newscientist.com/article/2269324-google-uses-underwater-fibre-optic-cable-to-detect-earthquakes/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Nearby black hole Cyg X-1 more massive than thought
New research suggests that the famous black hole Cygnus X-1 – first black hole ever detected and one of the closest to Earth – is farther away and much more massive than previously believed. Source: https://earthsky.org/space/cygnus-x-1-black-hole-more-massive-farther…
Are Texas Blackouts a Warning About the Follow-on Effects of Climate Change?
This week in America, “continent-spanning winter storms triggered blackouts in Texas, Oklahoma, Mississippi and several other states,” reports the New York Times. But that was just the beginning… One-third of oil production in the nation was halted. Drinking-water systems in Ohio were knocked offline. Road networks nationwide were paralyzed and vaccination efforts in 20 states were disrupted. The crisis carries a…