April 21, 2026
Spaceflight Now
  • Home
  • News Archive
  • Launch Schedule
  • Mission Reports
    • Antares Launcher
    • Ariane 5
    • Atlas 5
    • Delta 4
    • Falcon 9
    • Falcon Heavy
    • H-2A
    • Soyuz
    • Space Station
  • Members
    • Sign in
    • Become a member
    • Members Content
  • Live
  • Shop
  • Donate
Breaking News
  • [ April 21, 2026 ] Live coverage: SpaceX to launch final GPS III satellite for the U.S. Space Force Falcon 9
  • [ April 20, 2026 ] Blue Origin launches third New Glenn rocket, but payload ends up in wrong orbit New Glenn
  • [ April 19, 2026 ] Third flight of Blue Origin’s New Glenn rocket to feature 1st reuse of booster Mission Reports
  • [ April 18, 2026 ] SpaceX makes 600th Falcon booster landing during West Coast Starlink mission Falcon 9
  • [ April 16, 2026 ] Blue Origin hot fires its first previously flown booster, prepares for weekend launch Mission Reports

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

May 7, 2019 Stephen Clark
  • Astrophysics
  • Dragon
  • Expedition 59
  • Goddard Space Flight Center
  • International Space Station
  • ISS Cargo
  • Keith Gendreau
  • Military Space
  • NASA
  • Naval Research Laboratory
  • NICER
  • Q&A
  • Space Test Program
  • SpaceX
  • SpaceX CRS-17
  • STP-H6
  • Telecom
  • X-ray communications
  • X-rays
  • XCOM

Related Articles

Atlas 5

Atlas 5 rocket back on the launch pad for national security mission

November 12, 2020 Stephen Clark

A United Launch Alliance Atlas 5 rocket made its third trip to a Cape Canaveral launch pad Thursday, rolling into position for liftoff Friday afternoon with a classified payload for the U.S. government’s spy satellite agency.

Falcon 9

SpaceX launches Bandwagon-2 rideshare mission on Falcon 9 rocket from California

December 21, 2024 Will Robinson-Smith

This is the second batch of customer satellites that SpaceX will launch to a mid-inclination orbit. Liftoff from pad 4 East at Vandenberg Space Force Base happened at 3:34 a.m. PST (6:34 a.m. EST, 1134 UTC).

News

News from the Press Site: Boeing approaches first astronaut mission with Starliner

May 4, 2024 Will Robinson-Smith

In this week’s edition of News from the Press Site, Spaceflight Now’s Will Robinson-Smith is joined by Rachel Jewett, Senior Managing Editor for Via Satellite, and Joey Roulette, U.S. Business of Space Correspondent for Reuters.

News Headlines

  • Live coverage: SpaceX to launch final GPS III satellite for the U.S. Space Force
    April 21, 2026
  • Blue Origin launches third New Glenn rocket, but payload ends up in wrong orbit
    April 20, 2026
  • Third flight of Blue Origin’s New Glenn rocket to feature 1st reuse of booster
    April 19, 2026
  • SpaceX makes 600th Falcon booster landing during West Coast Starlink mission
    April 18, 2026
  • Blue Origin hot fires its first previously flown booster, prepares for weekend launch
    April 16, 2026
  • Blue Origin one step closer to launching New Glenn from Vandenberg Space Force Base
    April 15, 2026
  • West Coast SpaceX Falcon 9 mission launches 25 Starlink satellites
    April 15, 2026
  • SpaceX launches 1,000th Starlink satellite of 2026 on Falcon 9 rocket from Cape Canaveral
    April 14, 2026
  • NASA confident Artemis 2 heat shield will protect crew during re-entry
    April 10, 2026
  • Artemis astronauts send down Easter message, prep for lunar fly around Monday
    April 5, 2026
  • Home
  • News Archive
  • Launch Schedule
  • Mission Reports
    • Antares Launcher
    • Ariane 5
    • Atlas 5
    • Delta 4
    • Falcon 9
    • Falcon Heavy
    • H-2A
    • Soyuz
    • Space Station
  • Members
    • Sign in
    • Become a member
    • Members Content
  • Live
  • Shop
  • Donate

© 1999-2026 Spaceflight Now Inc