Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the largest known structure in the universe in terms of length, scientists claim.

The view was acquired on Sept. 14, 2017 at 19:59 UTC (spacecraft event time). The view was taken in visible light using the Cassini spacecraft wide-angle camera at a distance of 394,000 miles (634,000 ...

The view was acquired on Sept. 14, 2017 at 19:59 UTC (spacecraft event time). The view was taken in visible light using the ...

Mars, Venus, Jupiter, Saturn and Mercury will shine bright enough for the naked eye to see, and you can catch glimpses of Uranus and Neptune with binoculars or a telescope.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

Despite its whimsical name, Quipu (pronounced “kee-poo”) is the largest confirmed superstructure in the universe to date in ...

Jupiter and Mars are high overhead, and they’re both bright enough to stand out. Jupiter looks like the second brightest star ...

Last week, we discussed the Dog Star, Sirius, the sky’s brightest star. Orbiting Sirius is a faint companion, a tiny star known informally as the Pup.

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

Saturn’s rings are an arresting sight even through modest telescopes. The planet is made mostly of hydrogen and helium whereas the rings are billions of pieces of mostly bright-white water ice and ...