Comet of the Week: Levy 1990c
Perihelion: 1990 October 24.68, q = 0.939 AU I’ve commented in previous “Ice and Stone 2020” presentations that I spent several hundred hours unsuccessfully hunting for new comets before giving up that endeavor, and then accidentally discovered the comet that bears my name three years later. I did the bulk of my hunting during the …
Special Topic: The “Building Blocks” of Life
The “Special Topics” presentation two weeks ago discussed the possibility that signs of life might exist within certain meteorites that have been found to have come from Mars, although it did so partially within the overall context of “are we alone?” Another part of that discussion revolves around how life on Earth – and, hopefully, …
From the pyramids to Stonehenge – were prehistoric people astronomers?
Ever since humans could look up to see the sky, we have been amazed by its beauty and untold mysteries. Naturally then, astronomy is often described as the oldest of the sciences, inspiring people for thousands of years. Celestial phenomena are featured in prehistoric cave paintings. And monuments such as the Great Pyramids of Giza …
This Week in History: August 9-15
AUGUST 9, 1996: The NEAT program based in Hawaii discovers an apparent asteroid, designated 1996 PW, that is found to be traveling in a near-parabolic comet-like orbit with an approximate orbital period of 5600 years. 1996 PW was the first known long-period “Damocloid,” and these objects are discussed in a future “Special Topics” presentation. AUGUST …
Comet of the Week: Mrkos 1957d
Perihelion: 1957 August 1.44, q = 0.355 AU During the mid-20th Century the northern hemisphere went several decades without a bright naked-eye comet; what bright comets that did appear during that time were primarily visible from the southern hemisphere. This changed during 1957, when Comet Arend-Roland 1956h became bright and conspicuous during April and May, …
Special Topic: Small Planetary Moons
Throughout “Ice and Stone 2020” I have generally used the term “small bodies of the solar system” to refer to comets and asteroids. However, there is another type of “small body” that we encounter throughout the solar system: these are the smaller moons that accompany many of the major planets. The dividing line between what …
Grounded by pandemic, NASA interns keep researching
Students selected for a National Aeronautics and Space Administration (NASA) summer program have continued conducting research in 2020, despite the COVID-19 pandemic grounding their flight plans. NASA, which is responsible for the U.S. government’s civilian space program, selects several dozen college students each year for internships with its Student Airborne Research Program (SARP). Most summers …
UAE’s Mars mission aims to inspire citizens to pursue STEM fields
Dn July 14, a new Mars-bound spacecraft will launch from Japan. While several Mars missions are planned to launch over the next month, what makes this different is who’s launching it: the United Arab Emirates. Though new to space exploration, the UAE has set high goals for the probe, named Hope. The mission aims to …
SpaceX Crew Dragon pinpoints first-ever splashdown in Gulf of Mexico
After two action-packed months in Earth orbit two NASA astronauts splashed down safely in the Gulf of Mexico today, Sunday, Aug. 2, inside their SpaceX Crew Dragon spaceship on the history-making first human spaceflight launch from US soil in nine years and the first-ever commercially built and operated human space mission. Returning from the International …
10 Days in July: Trio of nations launch separate missions to Mars
Across a brief 10-day period covering mid to late July, the United Arab Emirates, China, and the United States each launched their own mission to explore Mars. For the UAE and China, it is their first solo attempt to reach the Red Planet, whereas the U.S. is continuing to build upon a legacy of success …