The countrywide celebration of the skies features a variety of public events designed to get everyone to look up.

The results may mean that attempts to directly detect particles of the invisible substance on Earth are likely to be unsuccessful.

The dust-rich comet provides a novel opportunity to characterize how cometary activity changes at ever greater distance from the Sun.

The Lyrid meteor shower should put on an impressive show the weekend of April 21/22.

Only the second time such an event at the ice giant has been captured, such observations could lead to a better understanding of Uranus’ magnetosphere and, in turn, help scientists test their theories of how Earth’s magnetosphere functions.

The findings ultimately will help researchers understand the extreme physics behind super-fast jets and the evolution of supermassive black holes in the early universe.

The analysis revealed that the orbits of other planetary systems are aligned, like in a disk, just like in our own solar system.

The so-called Musket Ball Cluster is the sixth such merging cluster with separation between normal matter and dark matter that astronomers have found.

Based on observations, a group of scientists have concluded that two planets larger than Mars but no more than a few times Earth's size likely orbit the nearby star Fomalhaut.

Researchers suggest that dust grains in a belt around Fomalhaut must be large, fluffy aggregates, similar to dust particles released from comets in our solar system.

April skies feature the ringed world and its many moons.

Using the data, scientists were able to rule out certain kinds of weakly interacting massive particles as dark-matter candidates.

The process that drives the dramatic transformation from spiral galactic youth to elderly elliptical is the rapid loss of cool gas, the fuel from which new stars form.

The article details how four significant modern-day technologies arose from the work of astronomers, physicists, and scientists.