April 21, 2026
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Breaking News
  • [ April 21, 2026 ] SpaceX launches 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

Harvard-Smithsonian Center for Astrophysics

Falcon 9

SpaceX launches Intelsat satellite with NASA air quality sensor

April 6, 2023 Stephen Clark

A SpaceX Falcon 9 rocket lifted off from Cape Canaveral shortly after midnight Friday with Intelsat 40e, a communications satellite destined to beam broadband internet signals to airplane and cruise ship passengers across North America while hosting a NASA instrument package to monitor air pollution.

Falcon 9

NASA air quality sensor ready for launch with Intelsat satellite

April 5, 2023 Stephen Clark

A $210 million NASA mission to improve air pollution monitoring over North America is set to launch Thursday with an Intelsat communications satellite blasting off on a SpaceX Falcon 9 rocket from Cape Canaveral.

News

Astronomers capture first image of black hole’s event horizon

April 10, 2019 William Harwood

A century after Einstein’s equations predicted the existence of black holes, a virtual telescope the size of planet Earth has captured the first direct image of a black hole, or rather the mysterious region defined by the hole’s event horizon, the point beyond which nothing, not even light, can escape, astronomers announced Wednesday.

News Headlines

  • SpaceX launches 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
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