Since Sputnik in 1957 humanity has fired thousands of rockets skyward — and most of
what went up is still up there. A picture-first tour of everything now circling Earth: the working,
the dead, and the millions of shards in between.
Data · ESA DISCOS — Space Environment Statistics · snapshot 31 Jul 2026
🚀
7,320
rocket launches since 1957 (successful)
🛰️
27,490
satellites placed into orbit, all-time
📡
18,840
of them still up there today
⚡
~16,000
still alive & functioning
🔭
46,420
objects tracked & catalogued by radar
⚖️
17,000+ t
total mass now circling Earth
💥
660+
break-ups, explosions & collisions on record
🌍
69
years of the Space Age (1957 → 2026)
Up & still up
What goes up mostly stays up
Of every satellite ever launched, roughly two-thirds are still in orbit — and about six in ten of those are dead. Retirement, for a spacecraft, usually means simply going quiet where it is.
Launched all-time27,490
27,490
Still in orbit18,840
18,840
Still functioning~16,000
~16,000
Where it all sits
Orbits & mass
Catalogued objects, by orbit region
Low-Earth orbit is by far the most crowded shell — home to nearly nine in ten tracked objects.
Mass in orbit, by region (tonnes)
Over 17,000 t of hardware — heavy rocket stages and big GEO platforms tilt the mass toward higher orbits.
The part we can't track
For every tracked object, thousands we can't see
Radar catalogues the big stuff. But ESA's MASTER-8 model (reference epoch 08/2024) estimates the true swarm of smaller fragments — each one a bullet at orbital speed.
~40,500
tracked & catalogued
Objects big enough (> ~10 cm) for radar to follow individually.
54,000
> 10 cm (modelled)
Total >10 cm including ~9,300 active payloads.
1.2 million
1 – 10 cm
Too small to track, too big to shield against. Mission-ending on impact.
140 million
1 mm – 1 cm
A haze of paint flecks, slag & shards that pits every surface in orbit.
Bar under each card = share of the total estimated population (log-scale reality: the 1 mm–1 cm swarm dwarfs everything else ~3,000×).
A taxonomy of junk
How ESA labels every object
DISCOS sorts each catalogued object into one of nine classes — only two of them are things anyone meant to put up there.
PL
Payload
The actual spacecraft — satellites, probes, crewed vehicles.
PM
Payload mission-related
Covers, lens caps, tethers deliberately released during ops.
PF
Payload fragmentation
Pieces from a satellite that broke up or exploded.
PD
Payload debris
Shed bits of a payload, cause unknown.
RB
Rocket body
Spent upper stages — the heaviest single objects up there.
RM
Rocket mission-related
Adapters, fairings and clamp bands jettisoned by the launcher.
RF
Rocket fragmentation
Debris from a stage that ruptured — often leftover propellant.
RD
Rocket debris
Shed rocket-body pieces, cause unknown.
UI
Unidentified
Tracked, but not yet matched to a known launch or object.
Why things break up
660+ fragmentation events — and their causes
More than six hundred satellites and rocket stages have broken apart in orbit. ESA files each event under one of eight causes:
Within some heavily-used altitude bands, the density of active satellites is now the same order of magnitude as debris — the traffic and the trash share the same lanes.
The neighbourhoods
Where the orbits live
Altitude decides everything — how fast you circle, how long you last, and who your neighbours are.
