Editors' picks - page 4

asteroid 2017 yz4 geocentric flyby diagram

Asteroid 2017 YZ4 to flyby Earth at 0.58 LD on December 28

A newly discovered asteroid designated 2017 YZ4 will flyby Earth at a distance of 0.00150 AU or 0.58 LD (~224 396 km / 139 433 miles) on December 28, 2017. This is the first known asteroid to flyby Earth within 1 lunar distance since November 21 and the 52nd this...

December 27, 2017

finland fireball december 22 2017

Very bright fireball over central Finland, sonic boom reported

A very bright fireball streaked across the sky over Finland around 18:06 UTC (20:06 local time) on Friday, December 22, 2017. The phenomenon was visible on the northernmost side of Lapp and southernmost coast of Finland. Experts said fireballs as bright and...

December 24, 2017

thomas fire firefighters december 2017 largest wildfire in california history

Thomas Fire grows to largest in California history

At 273 400 acres (110 641 ha) on Saturday, December 23, 2017, the Thomas Fire has become the largest wildfire in the history of California. So far, it destroyed 1 063, damaged 280 and still threatens 18 000 structures. It is now 65% contained and the estimated...

December 23, 2017

cosmic rays

How cosmic rays produce clouds and influence Earth's climate

A new study published in Nature Communications this week reveals how atmospheric ions, produced by the energetic cosmic rays raining down through the atmosphere, helps the growth and formation of cloud condensation nuclei - the seeds necessary for forming clouds in...

December 21, 2017

9wisconsin fireball december 19 2017

Bright fireball over Lake Michigan, Wisconsin

A bright fireball lit up the night sky over Lake Michigan at 05:53 UTC on December 19, 2017 (23:53 CST, December 18). The event lasted several seconds. The American Meteor Organization (AMO) received 61 reports. The fireball was seen over Illinois, Wisconsin, Ohio,...

December 20, 2017

fireball sochi russia december 15 2017

Fireball recorded blasting above Sochi, Russia

A bright meteor was captured streaking through the night sky over Sochi, Russia on Friday, December 15, 2017. Alexander Ivanov, head of the Kuban University laboratory of astrophysics, said the object was the size of a soccer ball, adding that it burned down 20 km...

December 18, 2017

solar filament eruption december 15 2017

Filament eruption, spotless Sun, Total Solar Irradiance and cosmic radiation

A 13-degree long plasma filament eruption was observed in SDO/AIA 304 imagery starting at 12:29 UTC on December 15, 2017. A glancing blow is expected late December 19, in combination with a recurrent, positive polarity CH HSS. Meanwhile, solar activity is at very...

December 17, 2017

stromboli volcano eruption december 15 2017

Strong explosions, lava overflow from Stromboli's NE crater, Italy

At least two 'stronger than usual' explosions took place at Italy's Stromboli volcano over the past 24 hours. The first explosion took place at 01:30 UTC (December 15) and the second around 10:30 UTC. "A gigantic cloud of smoke was visible from the...

December 15, 2017

thunder bay ontario canada crater december 14 2017 copyright CBC

Loud explosion shakes houses as meteorite hits Thunder Bay, Ontario

A loud explosion that shook houses in Ontario's Thunder Bay, Canada late Wednesday, December 13, 2017 appears to be caused by a meteorite that hit the ground near Highway 61, creating a 75 cm (30 inches) wide crater. The loud boom could be indicative of a larger...

December 14, 2017

argentina tornado december 8 2017

Impressive video of a large tornado forming very close to people, Argentina

A very large tornado formed Friday, December 8, 2017, in Buenos Aires province of Argentina just few hundred meters away from two farmers. The twister swept through several towns with winds between 130 and 200 km/h (80 - 125 mph), destroying everything in its path....

December 12, 2017

skjaldbreidur earthquake swarm iceland december 9 and 10 2017

Earthquake swarm under Skjaldbreidur volcano, Iceland

An intense earthquake swarm is in progress at the southern end of Prestahnúkur volcanic system (Langjökull icecap) since early Saturday, December 9, 2017. More than 100 quakes were registered within 40 hours, with 4 above M3.0. There have not been...

December 10, 2017

state of yap micronesia december 9 2017

Strong and shallow M6.1 earthquake hits State of Yap, 3rd M6+ within 48 hours

A strong and shallow earthquake registered by the USGS as M6.1 hit the State of Yap, Micronesia at 15:14 UTC on December 9, 2017. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting M6.1 at a depth of 12 km (7.5 miles). After M6.5 and M6.4 on...

December 09, 2017

big bend snow december 8 2017

Snow is falling in Houston, TX, last measurable snow there was 8 years ago

Snow is falling across parts of northern Mexico and Texas, US on Friday, December 8, 2017, including Houston where the last measurable snow fell 8 years ago. "What a memorable shift," NWS Houston said. "We measured 1 - 1.5 inches [2.5 - 3.8 cm] of...

December 08, 2017

cosmic rays increase graph 2015 17

Atmospheric radiation increasing as we head into Solar Minimum

Cosmic rays from deep space are increasing almost unabated as the Sun's magnetic field weakens and we head into Solar Minimum. As reported by Spaceweather.com, the stratospheric balloons they've been flying together with the students of Earth to Sky...

December 07, 2017

oklahoma earthquakes december 5 2017 location

Shallow M4.2, M2.8 earthquakes hit northeast Oklahoma

The U.S. Geological Survey registered two shallow earthquakes near Stillwater in northeast Oklahoma on December 5, 2017. The first, registered as M4.2 at 04:26 UTC (22:26 CST, December 4) hit at a depth of 3.3 km (2 miles) and the second, registered at 04:53 UTC as...

December 05, 2017

supermoon trifecta 2017 2018

Supermoon trifecta starts December 3, ends January 31 with Super Blue Blood Moon

A supermoon trifecta, series of three supermoons in a row, will start on Sunday, December 3, 2017 and end on January 31, 2018 with 'super blue blood' Moon. Supermoons are Moons that are full when they take place unusually close to the time of a month when...

December 02, 2017

night sky guide december 2017

Night sky guide for December 2017

The year ends with the first and last supermoon of the year, the first of 3 over the next 60 days, one royal meteor shower, and December solstice. Hopefully, this year made us all stronger, wiser and ready for what's to come in 2018 and beyond. December 1 -...

December 01, 2017