You can help name LA's newest dinosaur fossil?
The Los Angeles County Natural History Museum is seeking the public's help in naming a 70-foot-long sauropod skeleton unearthed by the museum's paleontologists.
The Los Angeles County Natural History Museum is seeking the public's help in naming a 70-foot-long sauropod skeleton unearthed by the museum's paleontologists.
Paleontology & Fossils
Jun 14, 2024
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Scientists at NASA's Jet Propulsion Laboratory contributed to a project that sets the stage for two telescopes investigating one of astrophysics' biggest mysteries.
Astronomy
Jun 12, 2024
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Crater 2, located approximately 380,000 light years from Earth, is one of the largest satellite galaxies of the Milky Way. Extremely cold and with slow-moving stars, Crater 2 has low surface brightness. How this galaxy originated ...
Astronomy
Jun 11, 2024
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When soil microbes eat plant matter, the digested food follows one of two pathways. Either the microbe uses the food to build its own body, or it respires its meal as carbon dioxide (CO2) into the atmosphere.
Environment
Jun 11, 2024
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Carbonaceous aerosols not only alter the atmospheric radiation budget, but also accelerate glacier melt by reducing the albedo of ice and snow surfaces. However, due to the heterogeneity of carbonaceous aerosols, the identification ...
Earth Sciences
Jun 11, 2024
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More than five decades after Denver said "thanks, but no thanks" to hosting the 1976 Winter Olympics, large numbers of Coloradans still feel ambivalent about going for gold.
Social Sciences
Jun 11, 2024
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The experimental generation of increasingly intense light beams could help to unveil new physical regimes occurring in the presence of very strong electromagnetic fields. While some progress has been made towards this goal, ...
A study led by researchers from Nanyang Technological University, Singapore (NTU Singapore) revealed that fine particulate matter from 1980 to 2020 was associated with approximately 135 million premature deaths globally. ...
Environment
Jun 10, 2024
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Farming just one kind of crop in a field at a time, and using a lot of chemicals, poses a risk to both people and nature. This simplified intensive agriculture often goes hand in hand with increased greenhouse gas emissions, ...
Ecology
Jun 10, 2024
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Dark matter is a hypothetical form of matter that is implied by gravitational effects that can't be explained by general relativity unless more matter is present in the universe than can be seen. It remains virtually as mysterious ...
Astronomy
Jun 7, 2024
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Matter is a general term for the substance of which all physical objects consist. Typically, matter includes atoms and other particles which have mass. A common way of defining matter is as anything that has mass and occupies volume. However, different fields use the term in different and sometimes incompatible ways; there is no single agreed scientific meaning of the word "matter".
For much of the history of the natural sciences people have contemplated the exact nature of matter. The idea that matter was built of discrete building blocks, the so-called particulate theory of matter, was first put forward by the Greek philosophers Leucippus (~490 BC) and Democritus (~470–380 BC). Over time an increasingly fine structure for matter was discovered: objects are made from molecules, molecules consist of atoms, which in turn consist of interacting subatomic particles like protons and electrons.
Matter is commonly said to exist in four states (or phases): solid, liquid, gas and plasma. However, advances in experimental techniques have realized other phases, previously only theoretical constructs, such as Bose–Einstein condensates and fermionic condensates. A focus on an elementary-particle view of matter also leads to new phases of matter, such as the quark–gluon plasma.
In physics and chemistry, matter exhibits both wave-like and particle-like properties, the so-called wave–particle duality.
In the realm of cosmology, extensions of the term matter are invoked to include dark matter and dark energy, concepts introduced to explain some odd phenomena of the observable universe, such as the galactic rotation curve. These exotic forms of "matter" do not refer to matter as "building blocks", but rather to currently poorly understood forms of mass and energy.
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