Teo Blašković founded The Watchers in 2011 and edited it until 2026, covering seismic and volcanic activity, extreme weather, space weather and near-Earth objects. Articles on this page are his archive.

  • Martian dust storm now officially a global dust event

    One of the most intense dust storms ever observed on Mars is raging across the planet since May 30, 2018. The storm grew rapidly over the next 20 days and is now officially a 'planet-encircling' (global) dust event. Although Martian dust storms are common…

  • The Weekly Volcanic Activity Report: June 13 – 19, 2018

    New activity/unrest was reported for 4 volcanoes between June 13 and 19, 2018. During the same period, ongoing activity was reported for 14 volcanoes. New activity/unrest: Fernandina, Ecuador | Fuego, Guatemala | Great Sitkin, Andreanof Islands (USA) | Ibu,…

  • Bright fireball explodes over South Island, New Zealand

    A bright fireball exploded over New Zealand's South Island at 09:15 UTC (21:15 local time) on June 18, 2018. Witnesses say the object was green or blue and brighter than the full moon. ''Anybody see the crazy lights and hear the boom at 9.15,''…

  • New eruption observed at Krakatau volcano, Indonesia

    A small eruption took place at Krakatau volcano, located between Java and Sumatra, on June 19, 2018. The last known eruption of this volcano took place on February 19, 2017. The eruption produced ash that rose a few hundred meters before it dissipated, Volcano…

  • Asteroid 2018 MZ4 flew past Earth at 0.54 LD

    A newly discovered asteroid designated 2018 MZ4 flew past Earth at 0.54 LD / 0.00139 AU (207 941 km / 129 208 miles) on June 16, 2018, one day before it was discovered. This is 36th known asteroid to flyby Earth within 1 lunar distance since the start of the year….