Space Brief 13 Aug 2025
Today's Space Brief covers the inaugural national security mission of ULA's Vulcan Centaur, the Space Force's 2026 budget insights, and shifts in military drone technology.
Launch Date
March 21, 1975
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Soyuz-U
NORAD ID
07700
International Designator
1975-019E
Decay Date
3/22/1975
Name
SL-4 DEB
Alternative Name
Sensor cover
Type
Status
Owner
TSSKB
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Length
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Zenit-4MT sensor cover
Purpose
Unknown
Mission
Unknown
Manufacturer
TSSKB
Life Expectancy
Unknown
Bus
Zenit deb
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Today's Space Brief covers the inaugural national security mission of ULA's Vulcan Centaur, the Space Force's 2026 budget insights, and shifts in military drone technology.
Blue Origin launch pad rebuild begins at Cape Canaveral after the New Glenn explosion, targeting return to flight by end of 2026. SpaceX flies NROL-179.
SpaceX successfully launches 21 Starlink satellites from Florida, marking another milestone in its satellite internet constellation. The Falcon 9 rocket was also successfully recovered at sea.
On April 22, 2010, an Atlas V lifted off from Cape Canaveral carrying a reusable robotic spaceplane so secret that the Air Force would not even confirm its mission duration. It came back 224 days later, lighter, quieter, and more operational than anyone outside Washington had expected. Fifteen years later, the X-37B is still flying, and the military still will not say what it does.
New Glenn rocket exploded hours after U.S. Space Force and NRO awarded Blue Origin a national security launch task order. Stand-down and mishap investigation expected.
Pentagon puts LEO constellation layers on hold during acquisition review. SpaceX and xAI join $100M autonomous drone contest. China's Zenk Space completes first stage static fire.
Understanding the high and low points of every orbit - from the International Space Station's careful dance with Earth's atmosphere to the extreme ellipses that take satellites to the edge of space and back.
SpaceX continues to make strides with its Starship program while successfully launching another batch of Starlink satellites into orbit, enhancing global internet coverage.