Showing 20 articles starting at article 461

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Geology, Space: Astrophysics

Return to the site home page

Space: Astronomy Space: Astrophysics Space: Exploration Space: The Solar System
Published

When ET calls, can we be sure we're not being spoofed?      (via sciencedaily.com) 

In the search for extraterrestrial intelligence, alien radio signals would be swamped by interference from radio sources on Earth. To confirm, researchers point away from the source and then back. If it's still there, it may be interesting. Researchers have come up with a new method that looks for evidence the signal has passed through the interstellar medium. The technique will boost confidence in any candidate signal discovered in the future.

Ecology: Endangered Species Ecology: Extinction Ecology: General Environmental: Ecosystems Geoscience: Geology
Published

In Florida, endangered coral finds a way to blossom      (via sciencedaily.com)     Original source 

In a new study, researchers have found that the restoration efforts of the critically endangered species elkhorn coral depend largely on the animal's location, microbiome, and the right conditions to provide an abundance of food.

Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features Space: The Solar System
Published

Hubble views a galactic monster      (via sciencedaily.com) 

The NASA/ESA Hubble Space Telescope has captured a monster in the making in this observation of the exceptional galaxy cluster eMACS J1353.7+4329, which lies about eight billion light-years from Earth in the constellation Canes Venatici. This collection of at least two galaxy clusters is in the process of merging together to create a cosmic monster, a single gargantuan cluster acting as a gravitational lens.

Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features
Published

Stellar cradles and graves seen in farthest galaxy ever      (via sciencedaily.com)     Original source 

New observations have distinguished the sites of star formation and a possible site of star death from the surrounding nebula in a galaxy 13.2 billion light-years away. This is the farthest that such structures have been observed.

Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features Space: The Solar System
Published

Astronomers identify the coldest star yet that emits radio waves      (via sciencedaily.com)     Original source 

Brown dwarf stars rarely emit radio waves. Here scientists have found the coldest star yet emitting at these long wave lengths. Understanding the science of 'ultracool brown dwarfs' will help deepen our knowledge of how stars evolve.

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features Space: The Solar System
Published

James Webb Telescope catches glimpse of possible first-ever 'dark stars'      (via sciencedaily.com) 

Three bright objects initially identified as galaxies in observations from the James Webb Space Telescope might actually represent an exotic new form of star. If confirmed, the discovery would also shed light on the nature of dark matter.

Offbeat: Space Space: Astrophysics Space: Exploration Space: Structures and Features Space: The Solar System
Published

Rare, double-lobe nebula resembles overflowing cosmic 'jug'      (via sciencedaily.com)     Original source 

A billowing pair of nearly symmetrical loops of dust and gas mark the death throes of an ancient red-giant star. The resulting structure, said to resemble an old style of English jug, is a rarely seen bipolar reflection nebula. Evidence suggests that this object formed by the interactions between the dying red giant and a now-shredded companion star.

Energy: Nuclear Offbeat: Space Physics: Quantum Physics Space: Astrophysics Space: Structures and Features
Published

Search for dark matter      (via sciencedaily.com)     Original source 

Scientists have applied a promising new method to search for dark matter particles in a particle accelerator. The method is based on the observation of the spin polarization of a particle beam in a storage ring COSY.

Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features Space: The Solar System
Published

Webb celebrates first year of science with close-up on birth of sun-like stars      (via sciencedaily.com)     Original source 

From our cosmic backyard in the solar system to distant galaxies near the dawn of time, NASA's James Webb Space Telescope has delivered on its promise of revealing the universe like never before in its first year of science operations. To celebrate the completion of a successful first year, NASA has released Webb's image of a small star-forming region in the Rho Ophiuchi cloud complex.

Geoscience: Environmental Issues Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Crawford Lake, Canada, chosen as the primary marker to identify the start of the Anthropocene epoch      (via sciencedaily.com)     Original source 

An international team of researchers has chosen the location which best represents the beginnings of what could be a new geological epoch, the Anthropocene. The Anthropocene Working Group have put forward Crawford Lake, in Canada, as a Global Boundary Stratotype Section and Point (GSSP) for the Anthropocene. A GSSP is an internationally agreed-upon reference point to show the start of a new geological period or epoch in layers of rock that have built up through the ages.

Offbeat: Space Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features
Published

Reinventing cosmology: New research puts age of universe at 26.7 -- not 13.7 -- billion years      (via sciencedaily.com)     Original source 

Our universe could be twice as old as current estimates, according to a new study that challenges the dominant cosmological model and sheds new light on the so-called 'impossible early galaxy problem.'

Space: Astrophysics Space: Structures and Features
Published

Record-breaking team of citizen scientists contribute data on pinwheel galaxy supernova      (via sciencedaily.com)     Original source 

Citizen scientists have set a new record for the SETI Institute and Unistellar, comprising the highest number of observers providing data on a single event. Amateur astronomers conducted a groundbreaking observation of supernova (SN) 2023ixf. The observations, which began just one hour after the supernova's first known appearance, have generated the longest continuous light curve of this supernova gathered by citizen scientists.

Geoscience: Geology Paleontology: Fossils Paleontology: General
Published

Scientists discover 36-million-year geological cycle that drives biodiversity      (via sciencedaily.com)     Original source 

Movement in the Earth's tectonic plates indirectly triggers bursts of biodiversity in 36 million-year cycles by forcing sea levels to rise and fall, new research has shown.

Ecology: Endangered Species Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Global cooling caused diversity of species in orchids, confirms study      (via sciencedaily.com)     Original source 

Research shows global cooling of the climate 10 million years ago led to an explosion of diversity in terrestrial orchids.

Geoscience: Geology Space: The Solar System
Published

Why the day is 24 hours long: Astrophysicists reveal why Earth's day was a constant 19.5 hours for over a billion years      (via sciencedaily.com)     Original source 

Astrophysicists have revealed how the slow and steady lengthening of Earth's day caused by the tidal pull of the moon was halted for over a billion years. They show that from approximately two billion years ago until 600 million years ago, an atmospheric tide driven by the sun countered the effect of the moon, keeping Earth's rotational rate steady and the length of day at a constant 19.5 hours. Without this billion-year pause in the slowing of our planet's rotation, our current 24-hour day would stretch to over 60 hours. The paper offers a new perspective on how global warming will affect the length of our day and validates global circulation models as a climate modelling tool.

Geoscience: Earthquakes Geoscience: Geology
Published

Earth's Inner Core: Earth's solid metal sphere is 'textured'      (via sciencedaily.com)     Original source 

Scientists used seismic data discovered Earth's inner core displays a variety of textures that it acquired will it formed from within the fluid outer core. The data set was generated over the past 27 years by a network of seismometers set up to enforce the nuclear test ban treaty.

Geoscience: Earthquakes Geoscience: Geology
Published

Water storage capacity in oceanic crust slabs increases with age, researchers find      (via sciencedaily.com)     Original source 

An international research team has discovered that a subduction zone's age affects the ability for it to recycle water between the Earth's surface and its inner layers. The more mature the subduction zone, the bigger the water storage capacity.

Geoscience: Earthquakes Geoscience: Geology Geoscience: Volcanoes Paleontology: Climate
Published

Research reveals sources of CO2 from Aleutian-Alaska Arc volcanoes      (via sciencedaily.com)     Original source 

Scientists have wondered what happens to the organic and inorganic carbon that Earth's Pacific Plate carries with it as it slides into the planet's interior along the volcano-studded Ring of Fire. A new study suggests a notable amount of such subducted carbon returns to the atmosphere rather than traveling deep into Earth's mantle.

Geoscience: Geology Geoscience: Volcanoes Paleontology: Climate
Published

Climate change will increase impacts of volcanic eruptions      (via sciencedaily.com)     Original source 

Volcanic disasters have been studied since Pompeii was buried in 79 A.D., leading the public to believe that scientists already know why, where, when and how long volcanoes will erupt. But a volcanologist said these fundamental questions remain a mystery.