Copernical Team
Saturn's tilt caused by its moons
Write a comment
Two scientists from CNRS and Sorbonne University working at the Institute of Celestial Mechanics and Ephemeris Calculation (Paris Observatory—PSL/CNRS) have just shown that the influence of Saturn's satellites can explain the tilt of the rotation axis of the gas giant. Their work, published on 18 January 2021 in the journal Nature Astronomy, also predicts that the tilt will increase even further over the next few billion years.
Rather like David versus Goliath, it appears that Saturn's tilt may in fact be caused by its moons. This is the conclusion of recent work carried out by scientists from the CNRS, Sorbonne University and the University of Pisa, which shows that the current tilt of Saturn's rotation axis is caused by the migration of its satellites, and especially by that of its largest moon, Titan.
Recent observations have shown that Titan and the other moons are gradually moving away from Saturn much faster than astronomers had previously estimated.
Seeing in a flash
Write a comment
Image:
Seeing in a flash Tests prove carbon-fibre fuel tank for Phoebus upper stage
Write a comment
Recent tests show that lightweight carbon-fibre reinforced plastic is strong enough to replace metal used in upper-stage rocket structures. This is an important milestone in Europe for the development of a prototype of a highly-optimised ‘black’ upper stage, Phoebus, a joint initiative by MT Aerospace and ArianeGroup, funded by ESA.
Solar activity reconstructed over a millennium
Write a comment
What goes on in the sun can only be observed indirectly. Sunspots, for instance, reveal the degree of solar activity - the more sunspots are visible on the surface of the sun, the more active is our central star deep inside. Even though sunspots have been known since antiquity, they have only been documented in detail since the invention of the telescope around 400 years ago.
Thanks to tha China's space station core module, cargo craft pass factory review
Write a comment
The core module of China's planned space station has passed a factory review, along with the project's Tianzhou-2 cargo craft and the core module mission products of the space application systems, the China Manned Space Engineering Office (CMSEO) said Thursday.
The completion of the factory review, conducted by experts at China's manned space program, means the construction project of the Analyzing different solid states of water on other planets and moons
Write a comment
Just like on Earth, water on other planets, satellites, and even comets comes in a variety of forms depending on multiple factors such as pressure and temperature. Aside from the gaseous, liquid, and solid states we are accustomed to, water can form a different type of crystalline solid called clathrate hydrate.
Although they look similar to ice, clathrate hydrates have actually small wate Florida's Space Coast the Number 1 Launch Site in the World in 2020
Write a comment
Historical launches like the return to crewed space flight and Mars2020 helped propel Florida's Space Coast to their busiest launch year in decades, putting the region on the top of the list for launch activity in the world.
In 2020, 31 successful attempts flew from Florida's Space Coast surpassing the record in 1966 of 29 successful launches out of 31 orbital attempts and two suborbital a NanoAvionics' built satellite for Aurora Insight to fly on SpaceX's Transporter 1 mission
Write a comment
NanoAvionics, a leading nanosatellite bus manufacturer and mission integrator, has announced that the first of two nanosatellites, built and integrated for US radio frequency spectrum and wireless data provider Aurora Insight, will be part of SpaceX's "Transporter 1" rideshare launch onboard a Falcon 9.
The nanosatellite, nicknamed "Charlie", forms one half of the two-satellite mission con New Year, New Record for Australia's Gilmour Space
Write a comment
Australia's leading rocket company, Gilmour Space Technologies, has ushered in the New Year with a successful hotfire of the world's largest single-port hybrid rocket engine. [See video]
"We achieved a record 91 kilonewtons (or 9 tonnes-force) of thrust in this initial verification test of our main engine," said Adam Gilmour, CEO and co-founder of Gilmour Space, a Queensland-based company 