今日太空
Today's space in one place. Positions are computed from public orbital data, and space weather is fetched from the NOAA Space Weather Prediction Center (SWPC) every 10 minutes.
Space weather now
- Kp index
- 1.33
- 平静
- NOAA scales
- G0 · R0 · S0
as of 11月4日 GMT+9 06:00 · NOAA SWPC
生活中的例子
- Sunlight takes about 8 minutes 20 seconds to reach Earth — the Sun you see is how it looked 8 minutes ago, and the Solar 3D view draws today's positions on that scale.
- On high-Kp days geomagnetic storms can enlarge GPS errors — a reason to check space weather before flying a drone or running GPS-guided farm machinery.
- If a bright dot crosses the evening sky for a few minutes without blinking, it may be the ISS — compare it with the pass times on the Tonight page.
太阳系 3D
Today's positions of the 8 planets and comets — step the date forward or back along their orbits.
地球·卫星 3D
Where the ISS, GK-2A and other satellites are right now — orbital data from CelesTrak.
今晚夜空
ISS visible passes, planet rise and set times and the Moon phase, city by city.
空间天气
Kp index, aurora outlook, solar flares and the 27-day forecast (NOAA SWPC).
实验室
Work out satellite dish angles, tonight's sky and asteroid impacts for your location.