Hello readers! Today we are travelling to Ceres, a dwarf planet in the asteroid belt located between Mars and Jupiter. Ceres is not very large--about the size of Texas, at 476 kilometers (276 miles) across. It was first discovered in 1801 and in 2015, was visited by the spacecraft Dawn. Today's featured article, however, was … Continue reading Ceres and Cryovolcanism
I have been fighting a headcold and am sorry to say it is winning. As such, the post scheduled for May 6th will be delayed. I hope to have it up by the morning of Wednesday the 10th at the latest. Thank you for your understanding.
Underground water aquifers under thick permafrost, groundwater breaking through the surface, catastrophically flooding the ground, and forming an ocean in the lowlands. This is the setup for the Hesperian era on Mars, around 3.71 to 3.37 billion years ago. The groundwater would have broken through near the end of the era, around 3.4 billion years ago, … Continue reading Tsunami Warning for Mars
Hello readers! Today we're going to be discussing rockets, more specifically, reusable rockets. As you may have heard, this past Thursday (March 30th), SpaceX marked the first launch of a reusable rocket, a historic event for aerospace. Reusable rockets could drastically reduce the cost of rocket launches and could make space travel a lot more … Continue reading Rocketing Through the Atmosphere
Depending on where you live, being prepared for a tsunami is not something you think about. In some places, the thought is much more likely to occur. Hawai'i is one such place. It has seen its share of tsunamis (including in 1946 and 1957), and evidence also exists for tsunamis occurring in Hawaii before recorded history … Continue reading Paleotsunamis and Hawai’i
Hello readers! Today we are taking a look at the magnitude 6.0 earthquake that hit South Napa, California on August 24th, 2014. The earthquake originated in the West Napa Fault Zone (WNFZ), a series of faults over 46 kilometers (28.6 miles), and possibly more, marked as potentially dangerous. The last damaging earthquake from the WNFZ … Continue reading Uncharted Faults: South Napa 2014 Earthquake
Hello all! Today we are once again travelling back in time to the early Earth. The period known as the Archean spans 3.8 to 2.5 billion years ago. Geochemical evidence, more specifically data from sulfur isotopes in the rock record, suggest that the atmosphere of the Archean was at times hazy. This hydrocarbon haze would … Continue reading A Hazy Shade of Earth