China slams reported plan for US B-52 bombers in Australia

The United States is preparing to deploy up to six nuclear-capable B-52 bombers in northern Australia, a news report said Monday, prompting China to accuse the U.S. of undermining regional peace and stability.

Say cheese! Sun showcases smiley appearance

The sun is showcasing a very smiley jack-o'-lantern appearance just in time for Halloween.

Hear and see the 'rare' impacts after large meteoroid hits Mars

Scientists revealed Thursday that two of its Mars robots recorded a sizable quake, leaving a crater bigger than any ever recorded in the solar system.

Streak of light over Arizona sky came from SpaceX launch

Viewers across Arizona - from Queen Creek to Tucson - reported seeing the rocket streak across the sky, hundreds of miles away from the launch site.

Discovery could 'dramatically narrow' search for life on other planets

A new study says an Earth-like planet orbiting an M dwarf star, the most common type of star in our universe, appears to have no atmosphere. The finding could cause a major shift in the search for life.

Watch: Fireball shoots across Arizona night sky amid Orionid meteor shower

Meteor activity is high right now due to the Orionid meteor shower, which occurs when the Earth passes through debris left behind from Hailey's Comet.

NASA astronauts training in Flagstaff ahead of Artemis mission

As part of the Artemis I mission, astronauts are getting some training at a place that officials say recreates the Moon's surface, in northern Arizona.

NASA announces members of its scientific team to study UFOs

NASA has selected 16 people who will spend nine months researching how much information is publicly available about UFOs, and how much more is needed to better understand unexplained sightings.

James Webb telescope captures stunning photo revealing ‘kaleidoscope of color’ in Pillars of Creation

NASA’s James Webb Space Telescope has provided a new detailed look at the Pillars of Creation that shows the scene in high definition. The region is where young stars form and lies 6,500 light-years away.

Dinosaur-killing asteroid triggered a tsunami with mile-high waves, new study says

A University of Michigan-led study said the energy released by the prehistoric tsunami was 30,000 times larger than the December 2004 Indian Ocean earthquake tsunami.

Watch for fireballs: Orionids meteor shower expected to peak this week

While the Orionids meteor shower peak is on Oct. 21, the Orionids will be active through Nov. 22. NASA says that some of these Orionids can leave behind glowing "trains," and some faster meteors could also become fireballs.

Astronaut James McDivitt, Apollo 9 commander, dies at 93 in Tucson

James A. McDivitt was also the commander of 1965’s Gemini 4 mission, where his best friend and colleague Ed White made the first U.S. spacewalk. His photographs of White during the spacewalk became iconic images.

World’s 1st space tourist signs up for weeklong flight around the moon

More than 20 years after his International Space Station trip, the 82-year-old billionaire could break John Glenn’s record as the oldest person in orbit.