August 5, 2025
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Breaking News
  • [ August 3, 2025 ] Starlink mission marks SpaceX’s 450th flight-proven Falcon booster launched Falcon 9
  • [ August 1, 2025 ] NASA, SpaceX ‘thread the clouds’ to launch Crew-11 to the International Space Station Falcon 9
  • [ July 31, 2025 ] Launch preview: SpaceX, NASA launches Crew-11 following 1-day weather scrub Falcon 9
  • [ July 29, 2025 ] SpaceX launches 28 Starlink satellites on a Falcon 9 rocket from Cape Canaveral Falcon 9
  • [ July 28, 2025 ] SpaceX, NASA conduct static fire test of a Falcon 9 rocket ahead of the Crew-11 launch Falcon 9

Astrophysics

Mission Reports

Live coverage: Proton rocket lifts off with X-ray astronomy observatory

July 13, 2019 Stephen Clark

A Proton rocket lifted off from the Baikonur Cosmodrome in Kazakhstan with the Spektr-RG X-ray astronomy mission at 1230:57 GMT (8:30:57 a.m. EDT) Saturday.

Mission Reports

Proton launch delayed to Saturday

July 12, 2019 Stephen Clark

Russian officials have delayed until Saturday the launch of a Proton rocket from Kazakhstan with the Spektr-RG X-ray astronomy observatory, an ambitious mission jointly developed with Germany to probe dark energy.

Mission Reports

Proton rocket and astronomy satellite back on the launch pad after battery replacement

July 9, 2019 Stephen Clark

Poised to loft a Russian-German X-ray astronomy observatory into space Friday, a Proton rocket returned to its launch pad Tuesday at the Baikonur Cosmodrome in Kazakhstan after a three-week delay to replace a drained battery on the vehicle.

Falcon 9

SpaceX wins NASA contract to launch X-ray telescope on reused rocket

July 8, 2019 Stephen Clark

NASA has selected a SpaceX Falcon 9 rocket — flying with a reused first stage booster — to launch the Imaging X-ray Polarimetry Explorer mission from pad 39A at the Kennedy Space Center in Florida in April 2021, bypassing Northrop Grumman’s air-launched Pegasus rocket for the task.

Mission Reports

Russia postpones launch of X-ray astronomy mission

June 21, 2019 Stephen Clark

Russian officials postponed the planned launch of a Proton rocket with an X-ray astronomy satellite Friday until no earlier than July 12 resolve a problem with an inadvertently drained battery on the vehicle.

Mission Reports

Russia to launch science mission probing dark energy

June 20, 2019 Stephen Clark

A Russian-built satellite hosting an array of X-ray telescopes is awaiting launch Friday from the Baikonur Cosmodrome in Kazakhstan on a mission to measure the mass and distance of colossal clusters of galaxies throughout the universe.

Mission Reports

Proton rocket, Russian-German astronomy satellite arrive at launch pad

June 14, 2019 Stephen Clark

A rocket-transporting railroad car ferried a Proton rocket to its launch pad Friday at the Baikonur Cosmodrome in Kazakhstan for final checkouts and testing before the vehicle’s scheduled June 21 liftoff with the Russian-German Spektr-RG X-ray telescope.

Mission Reports

NASA to shut down Spitzer Space Telescope early next year

May 30, 2019 Stephen Clark

After a search for an outside funding source turned up empty, NASA plans to end observations with the Spitzer Space Telescope in January to conclude a 16-year mission that discovered exoplanets, studied galaxies in the ancient universe, and peered at planets and asteroids in our own solar system.

Mission Reports

X-ray communications experiment delivered to space station

May 10, 2019 Stephen Clark

A novel communications experiment developed by NASA and the Naval Research Laboratory has arrived at the International Space Station to prove data can be transmitted in space using X-ray signals, a breakthrough that could have uses in deep space exploration and military technology on Earth.

Members

Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

May 7, 2019 Stephen Clark

Keith Gendreau, an astrophysicist at NASA’s Goddard Space Flight Center, recently spoke with Spaceflight Now about a new experiment on the International Space Station to demonstrate X-ray communications in space for the first time.

Posts pagination

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News Headlines

  • Starlink mission marks SpaceX’s 450th flight-proven Falcon booster launched
    August 3, 2025
  • NASA, SpaceX ‘thread the clouds’ to launch Crew-11 to the International Space Station
    August 1, 2025
  • Launch preview: SpaceX, NASA launches Crew-11 following 1-day weather scrub
    July 31, 2025
  • SpaceX launches 28 Starlink satellites on a Falcon 9 rocket from Cape Canaveral
    July 29, 2025
  • SpaceX, NASA conduct static fire test of a Falcon 9 rocket ahead of the Crew-11 launch
    July 28, 2025
  • SpaceX launches 24 Starlink satellites into a polar orbit
    July 26, 2025
  • Crew-11 astronauts, cosmonaut arrive in Florida ahead of launch to the space station
    July 26, 2025
  • SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Cape Canaveral
    July 25, 2025
  • Amazon says $139.5 million investment in Florida is key to ramping up launch cadence with Project Kuiper
    July 24, 2025
  • NASA probes to study how the solar wind triggers potentially dangerous ‘space weather’
    July 23, 2025
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