The 'baritone' of red giants refines cosmic distance measurements
A fresh look at red giant stars offers key insights into cosmic distance measurements and a way to measure the universe's expansion with the highest accuracy.
A fresh look at red giant stars offers key insights into cosmic distance measurements and a way to measure the universe's expansion with the highest accuracy.
Astronomy
Mar 15, 2024
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100
A Japanese firm said Monday it had successfully launched a spacecraft tasked with inspecting potentially dangerous man-made junk floating around the Earth.
Space Exploration
Feb 19, 2024
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26
Oxygen is an essential element for survival. Ocean warming, circadian rhythm, eutrophication, high-density aquaculture, power failures and long-distance live animal transportation can all lead to low oxygen levels in water. ...
Plants & Animals
Jan 29, 2024
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7
By clocking the speed of stars throughout the Milky Way galaxy, MIT physicists have found that stars further out in the galactic disk are traveling more slowly than expected compared to stars that are closer to the galaxy's ...
Astronomy
Jan 26, 2024
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300
How meanings align across languages suggests that translation and cross-cultural communication may be challenging, but researchers haven't been clear as to what characterizes this alignment, and what factors might affect ...
Social Sciences
Jan 9, 2024
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27
Two types of experiences affect the behavioral skills of animals: the animal's environment during its early development and acquired experience. Ben-Gurion University of the Negev's researchers followed Egyptian vultures ...
Plants & Animals
Jan 8, 2024
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53
These long summer holidays may seem like an extra blessing to families who are dealing with a child who does not like school or who refuses to go.
Social Sciences
Jan 8, 2024
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0
Quantum objects, such as electrons and photons, behave differently from other objects in ways that enable quantum technology. Therein lies the key to unlocking the mystery of quantum entanglement, in which multiple photons ...
Optics & Photonics
Dec 27, 2023
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67
Long-distance dispersal (LDD) is one of the most important biogeographical processes. Polyploidy, or whole-genome duplication, has long been proposed as an intrinsic feature of LDD. However, it is still unclear how and to ...
Ecology
Dec 22, 2023
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1
The shift from dense forests to open plains in Africa may have caused our ancient ancestors to change their vocal calls, research involving Durham University anthropologists has found.
Evolution
Dec 21, 2023
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50
Distance (or farness) is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other.
In most cases, "distance from A to B" is interchangeable with "distance between B and A".
This text uses material from Wikipedia, licensed under CC BY-SA