A study has shown that the well-preserved fossil of a nodosaur, a plant-eating dinosaur, could withstand the force of a high-speed car crash. The fossil, discovered in Alberta, Canada, belongs to Borealopelta markmitchelli , a species that lived around 110 million years ago during the Early Cretaceous period. This fossil is one of the best-preserved dinosaur specimens ever found, offering unprecedented insights into the defensive capabilities of the nodosaur’s armour.

Study Insights from Expert Researchers

The research, led by biomechanical paleontologist Dr. Michael Habib from UCLA, revealed that the keratin sheaths covering the nodosaur’s bony spikes were significantly thicker than originally thought. The thickness of the keratin layer on the fossil was measured at nearly 16 centimetres in some areas, much thicker than the keratin found in modern-day animals like cattle horns. This keratin, combined with bony spikes, provided an exceptionally strong defence.

According to Dr. Habib, the strength of the nodosaur’s armour was such that it could withstand over 125,000 joules of energy per square metre—equivalent to the force from a high-speed car collision. The research highlighted that this armour was a defence against predators but it also likely played a role in combat between males of the same species.

Adaptations for Flexibility and Protection

The study further suggested that the nodosaur’s armour, consisting of a flexible keratin layer, allowed for greater mobility and protection. If the keratin was damaged, it could be shed, offering a quick recovery mechanism compared to brittle bone armour that could crack under impact. The presence of keratin would also have allowed the dinosaur to fight effectively with its rivals, which could have been crucial in mating battles.

The fossil’s remarkable preservation has led to further insights into the armour of other dinosaur species, with researchers suggesting that similar adaptations might have been widespread among armoured dinosaurs.

New research has revealed that meteoroid trails, left behind by long-period comets, could help scientists detect potentially hazardous comets years before they approach Earth. These rare comets, which take hundreds or even thousands of years to complete their orbits, often go unnoticed until it is too late to prepare for a possible collision. However, scientists have now found a way to track these comets by observing the meteoroid streams they leave in their wake.

Tracking Comet Paths Through Meteoroid Trails

The study has been accepted for publication in The Planetary Science Journal, and is available as a preprint via arXiv. Long-period comets (LPCs) are known for their infrequent visits to the solar system. While comets like Halley’s Comet pass by Earth every 76 years, other comets only make an appearance once every few centuries. Some of these distant comets could pose a significant threat if their orbits bring them close enough to Earth. A comet with a large enough impact could release massive amounts of energy, potentially equivalent to hundreds of thousands of megatons of TNT.

By studying meteor showers, which are caused by the debris from these comets, researchers believe they can track the paths of these hazardous comets. Samantha Hemmelgarn, a graduate student at Northern Arizona University and lead author of the study, explained that meteoroid streams from long-period comets are less affected by planetary gravitational forces. This makes it easier to predict the orbits of the parent comets.

New Method Could Provide Years of Warning Time

The study used existing data from 17 meteor showers with known comet parents. By simulating comet streams and comparing them with known comet paths, researchers were able to predict where to look for these long-period comets. The results suggest that such methods could give scientists years of advanced warning before a comet poses a serious threat to Earth.

While this technique is not foolproof and has limitations, it is a step forward in planetary defence. The upcoming Legacy Survey of Space and Time (LSST), using the Vera C. Rubin Observatory, is expected to detect these long-period comets well in advance, allowing for better preparedness.

Challenges and Future Prospects

Despite its potential, the method cannot detect comets with orbital periods longer than 4,000 years, as their meteoroid streams would be too sparse to detect. However, this new approach could greatly improve early detection of more imminent threats, offering humanity a better chance to prepare for a possible comet impact.

Russia successfully launched a record-setting 53 satellites into space on November 4, 2024, achieving a major milestone in satellite deployment. This launch, managed by the Russian space agency Roscosmos, included a combination of domestic and international satellites. A Soyuz-2.1b rocket with a Fregat upper stage was used for the mission, lifting off from the Vostochny spaceport in Russia’s Far East at 6:18 pm EST on November 4 (2318 GMT, or 2:18 am IST on November 5). According to Roscosmos, all 53 satellites reached their designated orbits successfully.

International Collaborations in Satellite Deployment

As per the latest report by Russian News Agency, this satellite deployment involved several international partnerships. Among the payload were 49 Russian satellites, along with one joint Russian-Chinese and one Russian-Zimbabwean satellite. Notably, two satellites from Iran were also onboard: the Kowsar imaging satellite, which is designed for high-resolution imagery, and the Hodhod satellite, focused on communications. According to TASS, the launch of 51 domestic satellites broke a national record, underlining Russia’s evolving role in global satellite launches. While significant, this launch does not surpass the record set by SpaceX in January 2021, when 143 satellites were delivered into orbit in a single launch.

Ionospheric Monitoring and Strategic Aims

Two Ionosfera-M satellites were included in this mission to enhance monitoring of Earth’s ionosphere, providing valuable data on atmospheric conditions. Each satellite in this system weighs approximately 948 pounds (430 kilograms), highlighting Russia’s commitment to expanding its space-based observation systems. This launch marks Russia’s thirteenth of the year, reflecting the country’s sustained yet moderate pace in satellite launches relative to global counterparts.

Russia’s Position in Global Space Race

Although Russia has historically held a leading position in space activities, its launch rate has slowed in recent years. The United States, largely due to the frequency of SpaceX Falcon 9 launches, and China have accelerated their launch programmes, leaving Russia in a distant third position. Despite this, Russia continues to play an active role in international space collaborations, including its involvement with the International Space Station (ISS).