Since 2010, the European aerospace manufacturer ArianeGroup has been developing the Ariane 6 launch vehicle, a next-generation rocket for the European Space Agency (ESA). This vehicle will replace the older Ariane 5 model, offering reduced launch costs while increasing the number of launches per year. In recent years, the ArianeGrouip has been putting the rocket through its paces to prepare it for its first launch, which is currently scheduled for 2024. This past week, on Wednesday, November 23rd, the Ariane 6 underwent its biggest test to date as ground controllers conducted a full-scale dress rehearsal.Continue reading “Ariane 6 Fires its Engines, Simulating a Flight to Space”
When Oumuamua travelled through our Solar System back in 2017, people around the world paid attention. It was the first Interstellar Object (ISO) astronomers had ever identified. Then in August 2019, Comet 2I Borisov travelled through our Solar System, becoming the second ISO to cruise through for a visit. Together, the visiting ISOs generated a wave of inquiry and speculation.
There’s bound to be more ISOs than just those two, and a new study says our Solar System has probably captured some of these interstellar visitors, though they don’t stay for long.Continue reading “A Few Interstellar Objects Have Probably Been Captured”
Over sixty years ago, the first search for extraterrestrial intelligence (SETI), known as Project Ozma, was conducted. This campaign was led by legendary astronomer Frank Drake, which relied on the 85-1 Tatel Telescope at the Green Bank Observatory in West Virginia to listen to Tau Ceti and Epsilon Eridani for any signs of radio transmissions. Since then, the field of SETI has become more sophisticated thanks to more advanced radio telescopes, improved data analysis, and international collaboration. In the coming years, SETI will also benefit from advances in exoplanet studies and next-generation instruments and surveys.
In addition to examining exoplanets for signs of technological activity (aka. “technosignatures”), there are also those who recommend that we look for them here at home. Examples include the Galileo Project, which is dedicated to studying interstellar objects (ISOs) and unidentified aerial phenomena (UAP). There’s also the Penn State Extraterrestrial Intelligence Center, a research group dedicated to advancing SETI through the search for technosignatures. In a recent paper, they explain how future SETI efforts should consider looking for extraterrestrial technology in our Solar System.Continue reading “Upcoming Missions Could Search for Ancient Alien Technology Within the Solar System”
Comets, with their long, beautiful, bright tails of ice, are some of the most spectacular sightings in the night sky. This was most apparent when Comet NEOWISE passed by Earth in the summer of 2020, dazzling viewers from all over the planet while being mainly visible in the northern hemisphere. Even though the sky might look the same night after night, comets are a humble reminder that the universe is a very active and beautiful place.Continue reading “ESA Gives Green Light on its Comet Interceptor Mission”
A recent plan would send a Centaur mission to Jupiter’s orbit and follow a comet through formation.
From Mercury to the depths of the distant Kuiper Belt, there aren’t many unexplored corners of the solar system out there. One class of object, however, remains to be visited: the transitional Centaurs out beyond the orbit of Jupiter. Now, a new study out from the the University of Chicago recently accepted in The Planetary Science Journal looks at the feasibility of sending a mission by mid-century to intercept, follow and watch a Centaur asteroid as it evolves into a mature inner solar system comet.Continue reading “Proposed Centaur Mission Could Catch Comets in the Act of Formation”
In a year (perhaps two), the Vera C. Rubin Observatory in Chile will become operational and commence its 10-year Legacy Survey of Space and Time (LSST). Using its 8.4-meter (27 foot) mirror and 3.2 gigapixel camera, this observatory is expected to collect 500 petabytes of images and data. It will also address some of the most pressing questions about the structure and evolution of the Universe and everything in it.
One of the highly-anticipated aspects of the LSST is how it will allow astronomers to locate and track interstellar objects (ISOs), which have become of particular interest since `Oumuamua flew through our system in 2017. According to a recent study by a team from the University of Chicago and the Harvard-Smithsonian Center for Astrophysics (CfA), the Rubin Observatory will detect around 50 objects during its 10-year mission, many of which we will be able to study up-close using rendezvous missions.Continue reading “Vera Rubin Observatory Should Find 5 Interstellar Objects a Year, Many of Which we Could Chase Down With Spacecraft”
On October 19th, 2017, astronomers were astounded to learn that an interstellar object (named ‘Oumuamua) flew by Earth on its way out of the Solar System. Years later, astronomers are still debating what this object was – a comet fragment, a hydrogen iceberg, or an extraterrestrial solar sail? What’s more, the arrival of 2I/Borisov two years later showed how interstellar objects (ISOs) regularly enter our Solar System (some even stay!)
It’s little wonder then why proposals are in place to design missions that could rendezvous with an interstellar object the next time one passes by. One such mission is Project Lyra, a concept proposed by researchers from the Initiative for Interstellar Studies (i4is). Recently, an international team led from the I4IS drafted a White Paper that was submitted to the 2023-2032 Planetary Science and Astrobiology Decadal Survey.Continue reading “We Have the Technology to Retrieve a Sample From an Interstellar Object Like Oumuamua”
The ESA has announced a new mission to explore a comet. The Comet Interceptor mission will have a spacecraft wait in space until a pristine comet approaches the inner Solar System. Then it will make a bee line for it, and do some ground-breaking science.Continue reading “Meet the Comet Interceptor. It’ll Wait Patiently In Space for a Comet, Then Pounce On It”