Planets & Conjunctions

Visible planets, oppositions, close approaches and apparent meetings in the sky.

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Céu de crepúsculo sobre silhueta urbana, com um ponto brilhante representando Mercúrio e uma ampliação circular do planeta parcialmente iluminado.

Planets & Conjunctions12/09/20266 min read

Mercury in October 2026: the Best Viewing Window from Brazil and Why Greatest Elongation Helps

On October 12, Mercury reaches greatest eastern elongation, about 25° from the Sun. Learn when and where to look from Brazil and how to adjust the timing for your city.

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Duas pessoas observam um céu estrelado com binóculo e telescópio sobre uma paisagem urbana costeira brasileira, enquanto Saturno e seus anéis aparecem em destaque.

Planets & Conjunctions11/09/20266 min read

Saturn at opposition on October 4, 2026: when to observe from Brazil and what changes in brightness and rings

Saturn reaches opposition on October 4 and stays visible for nearly the whole night. See how to choose the viewing time in Brazil and what to expect with the unaided eye, binocular...

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Telescópio apontado para um céu estrelado ao anoitecer, com Netuno ampliado em destaque e luzes urbanas no horizonte.

Planets & Conjunctions08/09/20266 min read

Neptune at opposition on September 25, 2026: why it still is not visible to the naked eye and how to observe it from Brazil

Opposition makes Neptune more favorable for observing, but not bright enough to see without optical aid. Learn what changes, how to locate the planet, and which conditions help in ...

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Pessoa em silhueta observa um ponto muito brilhante no céu do entardecer acima de uma cidade, água e montanhas.

Planets & Conjunctions07/09/20264 min read

Venus at peak brightness on September 18, 2026: where and when to see it from Brazil

Venus reaches the peak brightness of this evening apparition on September 18. Learn where to look, the best viewing window and how to identify it without a telescope.

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Observadora diante do céu do crepúsculo com Vênus muito brilhante baixo no oeste, cidade e montanhas ao fundo e binóculos apoiados em primeiro plano.

Planets & Conjunctions01/09/20265 min read

Venus at peak brightness on September 18: when to look and how to find it from Brazil

Venus reaches the peak brightness of its evening apparition on September 18, 2026. Learn when to look, how to identify the planet, and what binoculars or a telescope add.

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