United Launch Alliance
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Final AEHF satellite mated to Atlas 5 launcher at Cape Canaveral
The sixth and final satellite in the U.S. Space Force's network of secure, jam-resistant AEHF communications satellites has been installed on top of a United Launch Alliance Atlas 5 rocket at Cape Canaveral for liftoff March 26.

NASA to consider WFIRST launch options after mission passes key review
NASA expects to select a launch vehicle next year to carry the Wide Field Infrared Survey Telescope -- a multibillion-dollar flagship astrophysics observatory targeted for cancellation by the Trump administration -- into space in 2025 after the mission passed a key review last month, agency officials said.

Seventh-grader wins contest to name new Mars rover: Perseverance
Twenty-eight thousand students across the United States submitted essays and proposed names for NASA's newest Mars rover and on Thursday, the agency announced the winner: Perseverance, submitted by Virginia seventh-grader Alexander Mather.

Mars 2020 rover arrives at Kennedy Space Center for July launch
Two U.S. Air Force cargo planes delivered the Mars 2020 rover, cruise stage, descent module and the Mars Helicopter to the Kennedy Space Center in Florida this week for final assembly, fueling and mounting atop a United Launch Alliance Atlas 5 rocket in preparation for liftoff in July.

Photos: Atlas 5 lifts off with Solar Orbiter
Take a look back at the Feb. 9 launch of a 189-foot-tall (57.6-meter) Atlas 5 rocket from Cape Canaveral carrying the European-built Solar Orbiter spacecraft.

ULA to debut unflown variant of Atlas 5 rocket later this year
The last unflown variant of United Launch Alliance's Atlas 5 launcher -- fitted with a five-meter fairing and a single strap-on solid rocket booster -- will carry a pair of U.S. military space surveillance satellites toward geosynchronous orbit from Cape Canaveral late this year, according to a Space Force spokesperson.

Atlas 5 blasts off with Solar Orbiter
Under a brilliant moon, a United Launch Alliance Atlas 5 rocket flashed to life and vaulted away from Cape Canaveral late Sunday, boosting the European Space Agency's $1.5 billion Solar Orbiter probe out of Earth's gravitational grip toward a multi-year voyage around the sun that will give scientists their first glimpse of the star's poles.

Atlas 5/Solar Orbiter launch timeline
Follow the major events of the Atlas 5 rocket's launch with the Solar Orbiter spacecraft with this mission timeline.
VideoLive coverage: Atlas 5 launches from Cape Canaveral with Solar Orbiter
A United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral's Complex 41 launch pad Sunday night with the European Space Agency's Solar Orbiter mission, a project developed in partnership with NASA. Launch occurred right on time at the opening of a two-hour window at 11:03 p.m. EST Sunday (0403 GMT Monday).

Decades in the making, Solar Orbiter finally meets launcher at Cape Canaveral
The European-built Solar Orbiter spacecraft was installed on top of its United Launch Alliance Atlas 5 launcher Friday at Cape Canaveral, ready for final charging and checkouts before liftoff Feb. 9 to finally begin a more than $1.5 billion science mission first approved by the European Space Agency nearly 20 years ago.