Astronomy

Cosmology

Visibility limit

International radio telescope array produces the first image of a black hole

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Astronomy

Unusual Stars

Researchers puzzled by recent discoveries of stars with variable brightness

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Astronautics

The private conquest of the Cosmos

A capsule of the company SpaceX flies to the International Space Station and may give the United States the capacity to put humans in orbit

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INTERVIEW

Daniel Kennefick: The importance of Sobral

An astrophysicist and science historian reports that without the observation of the eclipse in the city of Ceará, the experimental results of 1919 would probably have been inconclusive

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Cover

In the British expedition’s shadow

The Sobral eclipse was also observed by scientific expeditions from Brazil and the US

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COVER

When light bent

Observation of the 1919 solar eclipse from Brazil and Africa provided the first experimental proof of Albert Einstein’s theory of relativity

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Astronomy

Organization established to build the world’s largest radio telescope

After three and a half years of negotiation, representatives from seven countries came together to sign a treaty establishing the intergovernmental organization that will oversee construction of the world's largest radio telescope, the Square Kilometer Array

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Astronomy

A world on the edge of the solar system

Astronomers gather more evidence of another planet beyond Neptune

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Astrophysics

The young, ephemeral rings of Saturn

Two recent studies have presented new theories on their origin and probable end of Saturn's rings

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Chang'e 4

China lands probe on dark side of the Moon

China has become the first country to land a probe on the far side of the Moon

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Astronomy

Telescope measures almost all the starlight ever produced in the universe

Based on data collected by the Fermi Gamma-ray Space Telescope, an international group of astrophysicists has been able to measure almost all of the starlight produced since the universe was formed about 13.7 billion years ago

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Astronomy

Unusual Stars

Researchers puzzled by recent discoveries of stars with variable brightness

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Interview

Francis Halzen: In pursuit of neutrinos and cosmic rays

Lead scientist at IceCube observatory comments on the recent discovery of high-energy particles

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Astronomy

The first colossuses in the Cosmos

Two recent findings, however, suggest that some colossal systems already existed at 13.8 billion years ago

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History

405-year-old letter suggests Galileo toned down his beliefs

A letter found at the Royal Society in London suggests that Galileo Galilei softened his stance against the ecclesiastical doctrine that the Sun orbited Earth to avoid arrest by the Roman Inquisition

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Video

The eclipse which revolutionized physics

This Wednesday, May 29th, celebrates 100 years of the eclipse which was the first experimental proof of the Theory of General Relativity | 2'36"

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INTERVIEW

Robert Shelton: Partnership between giants

President of the GMT telescope explains why he joined with competitor TMT to secure funding from the National Science Foundation

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Astronomy

Devouring stars

According to a survey, the Milky Way cannibalized eleven neighboring galaxies

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ASTRONOMY

The rocks that remained

An alternative model suggests that the asteroid belt originated from leftovers from the formation of the planets in the solar system

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ASTROPHYSICS

Signs of new worlds

Gravitational waves could be used to detect exoplanets in close orbit around their parent star

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Astrophysics

Primordial origin

Distant galaxies 13 billion light-years from Earth are home to the first black holes created in the Universe, with masses as much as a billion times greater than the Sun

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ASTROPHYSICS

Cosmic accelerator

Supermassive black hole outside the Milky Way is first confirmed source of high-energy neutrinos

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INTERVIEW

Robert Shelton: A partnership between giants

President of the GMT telescope explains why he joined together with competitor TMT to secure funding from the National Science Foundation

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Astronomy

New frontiers of the Milky Way

The disc of the Milky Way may be twice as large as previously estimated, at up to 200,000 light-years in diameter

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ASTROPHYSICS

A meteorite in Serra Pelada

Fragments of one of the largest asteroids in the solar system recovered by researchers in Amazonia

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Geology

The secret behind Pluto’s dunes

An international group of researchers seems to have found the explanation behind Pluto's dunes

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Astronomy

A swarm of black holes

Astrophysicists have discovered a dozen stellar-mass black holes (some larger than the Sun) in the center of the Milky Way

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Physics

Hawking’s legacy

The British physicist showed black holes can emit radiation and shrink in size

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Astronomy

Reduced access to ESO telescopes

Brazilian astronomers will be granted less observation time at some of the world's most advanced telescopes

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Twins Study

Effects of a long space journey

A long stay in space causes changes to the body that can last for months, even after returning to Earth

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