Every launch time, status and figure here comes from a named source. This is each one: what we use it for, its licence, the credit it asks for and whether it is live today.
Launch times have their own guide: how to read launch times.
Launch times come from Launch Library 2, run by The Space Devs, which gathers them from space agencies, launch companies, trusted journalists and its own community.
Our servers collect the data on a schedule and keep a copy, so your browser never asks these services for data.
Every live part of the site says when its data was last updated, and turns amber when it may be out of date.
If we cannot confirm an image's licence, we do not show it. Agency and company logos are never shown as images.
News is a headline, the site, the time and a link. We never summarise or copy a news article.
Checking which sources are live.
Rocket launches: dates and times with their precision, statuses, rockets, launch sites and providers, plus events such as spacewalks and dockings.
Links to news articles about each launch and event: headline, site, time and link, nothing more.
Checking whether a launch webcast is upcoming, live or over. Video plays only in YouTube's own player.
A second opinion on the times of the next five launches, to cross-check our main source.
Orbital elements to show where the International Space Station, Tiangong and other satellites are, and the catalogue of what each country has in orbit.
A behind-the-scenes check of the space station position we calculate ourselves. It is never shown on the site.
Space weather: the Kp index, aurora forecasts, solar wind, alerts and solar flares.
Space weather events: coronal mass ejections, solar flares and geomagnetic storms.
Asteroid close approaches, impact risk ratings, and where planets and spacecraft are.
Real photographs and footage of missions, spacecraft and places.
Astronomy Picture of the Day, shown as a picture only when it carries no outside copyright; otherwise its title, credit and a link.
Images from the James Webb Space Telescope, each with its full credit.
Images from the Hubble Space Telescope, each with its full credit.
Webb and Hubble images and news releases from the Space Telescope Science Institute.
New astronomy and space physics papers: titles, authors and abstracts, with links to arXiv.
Life science, health and technology research: titles and links, and abstracts only where the licence allows.
NASA technical reports and conference papers, mostly about technology.
Headlines from the European Space Agency, with links.
Press release headlines from JAXA, Japan's space agency, with links.
News from the UK Space Agency.
Headlines from NASASpaceflight: headline, site, time and link, nothing more.
Headlines from Spaceflight Now: headline, site, time and link, nothing more.
NASA news releases.
Country and ocean outlines, for maps and for saying which country a satellite is passing over.
Cloud cover where you are, to say whether the sky is clear tonight, only when you ask for it.
How much astronomy research each country publishes each year.
Which countries have signed the Artemis Accords, and when.
Each country's membership of, or cooperation with, the European Space Agency.
3 sources feed the site today.
Rocket launches: dates and times with their precision, statuses, rockets, launch sites and providers, plus events such as spacewalks and dockings.
Orbital elements to show where the International Space Station, Tiangong and other satellites are, and the catalogue of what each country has in orbit.
Asteroid close approaches, impact risk ratings, and where planets and spacecraft are.
These sources are chosen and their terms checked. Each one switches on when the part of the site that needs it is built.
Links to news articles about each launch and event: headline, site, time and link, nothing more.
Checking whether a launch webcast is upcoming, live or over. Video plays only in YouTube's own player.
A second opinion on the times of the next five launches, to cross-check our main source.
A behind-the-scenes check of the space station position we calculate ourselves. It is never shown on the site.
Space weather: the Kp index, aurora forecasts, solar wind, alerts and solar flares.
Space weather events: coronal mass ejections, solar flares and geomagnetic storms.
Real photographs and footage of missions, spacecraft and places.
Astronomy Picture of the Day, shown as a picture only when it carries no outside copyright; otherwise its title, credit and a link.
Images from the James Webb Space Telescope, each with its full credit.
Images from the Hubble Space Telescope, each with its full credit.
Webb and Hubble images and news releases from the Space Telescope Science Institute.
New astronomy and space physics papers: titles, authors and abstracts, with links to arXiv.
Life science, health and technology research: titles and links, and abstracts only where the licence allows.
NASA technical reports and conference papers, mostly about technology.
Headlines from the European Space Agency, with links.
Press release headlines from JAXA, Japan's space agency, with links.
News from the UK Space Agency.
Headlines from NASASpaceflight: headline, site, time and link, nothing more.
Headlines from Spaceflight Now: headline, site, time and link, nothing more.
NASA news releases.
Country and ocean outlines, for maps and for saying which country a satellite is passing over.
Cloud cover where you are, to say whether the sky is clear tonight, only when you ask for it.
How much astronomy research each country publishes each year.
Which countries have signed the Artemis Accords, and when.
Each country's membership of, or cooperation with, the European Space Agency.