Cosmos

Astronomy

The challenges of living in space

Experiments confirm that living in space would not be easy

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Astronomy

Plasma waves higher than the Sun

Stars close to one another can cause plasma tides and enormous waves

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Astronomy

Satellite debris in the stratosphere

On returning to Earth, satellites and rockets leave metal chemical elements in the stratosphere

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Astrophysics

James Webb data challenges cosmology

Telescope observations fuel debate about the formation of galaxies and the speed at which the Universe is expanding

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Astronomy

Scars that last centuries

Storms on Saturn occur every 20 to 30 years and leave marks that last for centuries

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ASTROPHYSICS

Artificial intelligence helps distinguish spiral galaxies from elliptical ones

AI algorithms classify 160,000 groups of billions of stars from images obtained by a Brazilian robotic telescope

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Astronomy

Ages of the Moon

The Moon is 4.5 billion years old, but its current surface is younger

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Astronomy

Why we see fewer stars at night

Increased artificial light in the night sky hinders astronomical observations, study says

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ASTROPHYSICS

Dense, compact star could be made of strange matter

With 80% of the mass of the Sun and a radius of 10.4 kilometers, the object could be made up of free quarks

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Astronomy

Origin of the high temperature of the solar corona

Satellites help shed light on why the Sun's corona is so much hotter than its surface

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History

Medieval monks observed blood-red moons

Texts and paintings by medieval monks help accurately date major volcanic eruptions

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ASTROPHYSICS

Super telescope gets a funding boost

Giant Magellan Telescope to receive US$205 million in fresh investment, including US$5 million from FAPESP

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RETROSPECT

The sky, as seen from the Missions

With telescopes made alongside the Guaraní people of southern Brazil, Jesuit Buenaventura Suárez closely observed lunar and solar eclipses and Jupiter's moons in the eighteenth century

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Astronomy

Chinese probe examines soil from Mars

China's first Mars mission finds that the planet's soil is highly heterogeneous and geologically complex

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Astrophysics

Brazilian astronomers find “misplaced” ring around an object distant from the Solar System

A distant circular structure is found revolving Quaoar, an icy body located in the Kuiper belt

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