Showing 20 articles starting at article 761

< Previous 20 articles        Next 20 articles >

Categories: Paleontology: Dinosaurs, Space: Exploration

Return to the site home page

     (via sciencedaily.com) 

Scientists found that ancient bacteria could survive close to the surface on Mars much longer than previously assumed. So, if life did, in fact, evolve when the last waters flowed on Mars, it would likely still be there today -- billions of years later.

     (via sciencedaily.com) 

Piecing together the crushed skull of a fossil bird that lived alongside the dinosaurs helped researchers extrapolate what its brain would have looked like: big olfactory bulbs would have meant that this bird, the earliest known animal to eat fruit, had a better sense of smell than most modern birds. And the bones around its eye sockets revealed that it would have been better at seeing by day than at night.

     (via sciencedaily.com)     Original source 

Using the James Webb Space Telescope to look back in time at the early universe, astronomers discovered a surprise: a cluster of galaxies merging together around a rare red quasar within a massive black hole. The findings offer an unprecedented opportunity to observe how billions of years ago galaxies coalesced into the modern universe.

     (via sciencedaily.com)     Original source 

NASA's James Webb Space Telescope has captured a lush, highly detailed landscape -- the iconic Pillars of Creation -- where new stars are forming within dense clouds of gas and dust. The three-dimensional pillars look like majestic rock formations, but are far more permeable. These columns are made up of cool interstellar gas and dust that appear -- at times -- semi-transparent in near-infrared light.

     (via sciencedaily.com) 

Ostrich-like dinosaurs called ornithomimosaurs grew to enormous sizes in ancient eastern North America, according to a new study.

     (via sciencedaily.com) 

A long-term experiment aboard the International Space Station has tested the effect of space radiation on mouse embryonic stem cells. Their findings will contribute to helping scientists better assess the safety and risks related to space radiation for future human space flights.

     (via sciencedaily.com) 

Scientists have compiled 41 solar occultation observations of Saturn's rings from the Cassini mission. The compilation will inform future investigations of the particle size distribution and composition of Saturn's rings, key elements to understanding their formation and evolution.

     (via sciencedaily.com) 

Astronomers around the world are captivated by an unusually bright and long-lasting pulse of high-energy radiation that swept over Earth Sunday, Oct. 9. The emission came from a gamma-ray burst (GRB) -- the most powerful class of explosions in the universe -- that ranks among the most luminous events known.

     (via sciencedaily.com) 

Mission engineers will track NASA's Lucy spacecraft nonstop as it prepares to swoop near Earth on Oct. 16 to use this planet's gravity to set itself on a course toward the Jupiter Trojan asteroids.

     (via sciencedaily.com) 

Astronomers have made a unique measurement that indicates a jet, plowing through space at speeds greater than 99.97 percent of the speed of light, was propelled by the titanic collision between two neutron stars.

     (via sciencedaily.com) 

A process of desiccation and deflation explains why dinosaur 'mummies' aren't as exceptional as we might expect, according to a study.

     (via sciencedaily.com) 

Analysis of data obtained over the past two weeks by NASA's Double Asteroid Redirection Test (DART) investigation team shows the spacecraft's kinetic impact with its target asteroid, Dimorphos, successfully altered the asteroid's orbit. This marks humanity's first time purposely changing the motion of a celestial object and the first full-scale demonstration of asteroid deflection technology.

     (via sciencedaily.com) 

Planetary scientists identified a potential source of a special kind of meteorite. Its characteristics could explain certain discrepancies in how near-Earth asteroids are classified.

     (via sciencedaily.com) 

Most theories claim the Moon formed out of the debris of a collision between the Earth and an object about the size of Mars, called Theia, coalescing in orbit over months or years. A new simulation puts forth a different theory -- the Moon may have formed immediately, in a matter of hours, when material from the Earth and Theia was launched directly into orbit after the impact.

     (via sciencedaily.com) 

Discovered in 1912, cosmic rays have been studied extensively and our current understanding of them is compiled into what is called the Standard Model. Recently, this understanding has been challenged by the detection of unexpected spectral structures in the cosmic ray proton energy spectrum. Now, scientists take this further with high-statistics and low-uncertainty measurement of these protons over a broader energy range using the CALorimetric Electron Telescope, confirming the presence of such structures.

     (via sciencedaily.com) 

A research team has found asteroid impacts on the Moon millions of years ago coincided precisely with some of the largest meteorite impacts on Earth, such as the one that wiped out the dinosaurs.

     (via sciencedaily.com) 

An international team of researchers has revealed new evidence for the possible existence of liquid water beneath the south polar ice cap of Mars.

     (via sciencedaily.com) 

After 10 months flying in space, NASA's Double Asteroid Redirection Test (DART) -- the world's first planetary defense technology demonstration -- successfully impacted its asteroid target on Monday, the agency's first attempt to move an asteroid in space.

     (via sciencedaily.com) 

Astronomers believe bright reflections beneath the surface of Mars' South Pole are not necessarily evidence of liquid water, but instead geological layers.

     (via sciencedaily.com)     Original source 

In December 2020, a small landing capsule brought rock particles from the asteroid Ryugu to Earth -- material from the beginnings of our solar system. The Japanese space probe Hayabusa 2 had collected the samples. Geoscientists have now discovered areas with a massive accumulation of rare earths and unexpected structures.