During the past 25 years astronomers have discovered a wide variety of exoplanets, made of rock, ice and gas, thanks to the construction of astronomical instruments designed specifically for planet searches. Also, using a combination of different observing techniques they have been able to determine a large number of masses, sizes, and hence densities of the planets, which helps them to…
Tag: Ice
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…
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…
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…
Giant crack frees a massive iceberg in Antarctica
This dramatic breakup comes after a major crack formed on the shelf in November 2020 and continued to grow. Source: https://www.livescience.com/brunt-ice-shelf-breaks-antarctica.html
Water worlds may be abundant in our galaxy
A new study suggests that our Milky Way galaxy is filled with planets like Earth, containing continents and oceans. If so, life might be common in the Mlilky Way. Source: https://earthsky.org/space/water-common-on-planets-pebble-accretion-milky-way…
‘Earth wind’ may generate water on the moon
Particles carried from Earth’s poles via our planet’s magnetosphere could be interacting with lunar rocks to create small quantities of water on the moon. Source: https://earthsky.org/space/earth-wind-may-generate-water-on-moon…
Ghost particle travels 750 million light-years, ends up buried under the Antarctic ice
Astronomers spot two highly delayed signals from two different black holes tearing apart stars in their vicinity. Source: https://www.livescience.com/tidal-disruption-evnts-release-neutrino.html
Scientist captures evidence of dynamic seasonal activity on a Martian sand dune
A Southwest Research Institute (SwRI) scientist examined 11 Mars years of image data to understand the seasonal processes that create linear gullies on the slopes of the megadune in the Russell crater on Mars. In early spring images, captured by two different cameras on the Mars Reconnaissance Orbiter, SwRI’s Dr. Cynthia Dinwiddie noticed airborne plumes of dusty material associated with the…
How Canadians Derailed a Train in 1998 and Drove It to City Hall for Power After a Brutal Ice Storm
James Gilboy, writing at The Drive: Over the week spanning Jan. 4-10, 1998, a trio of massive ice storms wracked the northeastern United States and parts of Canada. Knocking over transmission towers, the storms deprived up to 1.35 million people of electricity, in some cases for weeks (sound familiar?). Rather than leave town, though, one Canadian mayor stepped up to bring…