Space terms should point you to the right story.

Countdown time before the planned liftoff. Holds can pause the clock without ending the attempt.

A planned or unplanned pause while teams resolve a countdown issue.

A launch attempt stopped before liftoff, usually because weather, range, vehicle, or payload limits were not acceptable.

The point of highest aerodynamic pressure during ascent, when the vehicle is pushing hardest against the atmosphere.

The planned shutdown of a booster or core stage before staging or separation.

The handoff when one rocket stage separates so the next stage can continue the mission.

The protective shell around a payload during atmospheric ascent.

The later rocket stage that completes orbit insertion, deployment, or a higher-energy trajectory after the booster is done.

The burn or sequence that places a spacecraft into its intended orbit or trajectory.

The region close enough to Earth for many satellites, crew vehicles, and commercial station plans.

A high orbit where a satellite appears fixed over one longitude on Earth.

A near-polar orbit that keeps similar local lighting conditions over each ground pass, useful for Earth observation.

An elliptical transfer path often used before a spacecraft raises itself toward geostationary orbit.

The highest and lowest points in an elliptical orbit.

The change in velocity a spacecraft needs for a maneuver, transfer, rendezvous, or landing.

A burn that sends a spacecraft from Earth orbit toward the Moon.

Matching orbit and approach with another spacecraft, then making a controlled connection.

Flying hardware again after recovery, inspection, refurbishment, and customer acceptance.

Reuse with short, repeatable turnaround rather than a one-off recovery followed by long refurbishment.

A booster landing on a drone ship or platform away from the launch site.

A booster returns near the launch site after stage separation instead of landing downrange.

A burn that helps a returning booster manage heating and speed before the final landing sequence.

The final engine burn that slows a booster or vehicle for touchdown, catch, or controlled impact.

An unexpected event during testing, launch, flight, deployment, landing, or operations that needs well-sourced explanation.

A formal process after a safety-significant commercial launch or reentry event, often under regulator oversight.

The point when a vehicle or operation is allowed to resume after required investigation, fixes, licensing, or safety work.

NASA's Moon-to-Mars campaign, combining SLS, Orion, landers, Gateway, spacesuits, surface systems, science, and partners.

The region between Earth and the Moon, including lunar orbit and staging paths.

NASA's planned lunar-orbit outpost for staging, logistics, power, habitation, science, and Artemis operations.

The Artemis commercial lander lane intended to move astronauts between Orion, Gateway, or other staging paths and the lunar surface.

NASA's commercial lunar delivery program for robotic science and technology payloads.

Using local materials such as lunar or Martian resources instead of bringing everything from Earth.

The loose dust and broken rock covering the Moon, Mars, and other airless or thin-atmosphere bodies.

A mission that brings material from another world back to Earth for laboratory study.

A private or commercial low Earth orbit station intended to succeed some ISS services after the transition.

A customer, often a government agency, whose demand helps make a new space service financially credible.

Transportation, training, operations, and safety support for people traveling to and from orbit.

The delivery and return of supplies, experiments, hardware, or samples for an orbital customer.

Research that uses orbit's near-weightless environment for biology, materials, fluids, medicine, or manufacturing tests.

How much a station, spacecraft, or service is actually used by customers, researchers, agencies, or operators.

Inspecting, repairing, refueling, upgrading, assembling, or moving spacecraft after launch.

A public contracting step such as a solicitation, award, design review, certification, or service task order.

Using satellites to measure Earth systems such as weather, land, water, crops, fires, cities, and disasters.

Collecting information about Earth or another world from a distance using cameras, radar, spectrometers, or other instruments.

How often a satellite or constellation can observe the same location again.

The delay between collecting data and getting it to people or systems that can use it.

Radar imaging that can often see through clouds and work at night, useful for Earth-observation tasks.

Splitting light into wavelengths to infer composition, temperature, motion, or atmospheric chemistry.

A planet passing in front of its star from our view, causing a small dimming that telescopes can measure.

A possible sign of life that must be interpreted carefully because non-life processes can mimic some signals.

A U.S. authorization focused on public safety for commercial launch or reentry operations.

A U.S. communications and satellite authorization path covering spectrum, licensing, and orbital-debris conditions.

An international spectrum and orbital-slot coordination step for satellite networks.

The treaty principle that countries authorize and supervise national space activities, including non-government activity.

Lowering a spacecraft's orbit so it reenters or moves toward a disposal path.

Safing leftover energy sources, such as propellant or batteries, so old hardware is less likely to fragment.

A predicted close approach between two objects in space.

Changing a spacecraft's path or operations to reduce the risk from a conjunction.

A cascading-collision risk where debris creates more debris and makes useful orbital regions harder to operate in.

A large satellite constellation built from hundreds or thousands of spacecraft.