المشي على السلم
تصفح من الشمس إلى نبتون بالمقياس الحقيقي، مع مؤشرات لزمن سفر الضوء على طول الطريق.
ESO/S. Guisard (www.eso.org/~sguisard) (CC BY 4.0)
المشي على السلم
Everything here is at true scale: sizes and distances in the same proportion. Each pixel you scroll carries you 3,000 km.
Keep scrolling. Every picture you have seen of the solar system squeezed this emptiness out.
Mercury is ahead, where sunlight is almost seven times stronger than on Earth.
Still nothing. You have crossed 16.8 مليون km since الزئبق.
The sunlight passing you now left the Sun 5 د 5 ث ago.
Earth is ahead. Watch how small home turns out to be.
آذار/مارس is still 58.8 مليون km ahead.
A radio message from Earth takes between 3 and 22 minutes to reach Mars, depending on where the two planets are.
You could line up 4,611 Earths side by side in the space you have crossed since الأرض.
You are 14% of the way from آذار/مارس to سيريس.
Still nothing. You have crossed 53.1 مليون km since آذار/مارس.
The sunlight passing you now left the Sun 17 د 6 ث ago.
سيريس is still 79.6 مليون km ahead.
You are inside the asteroid belt. Did you hit anything? On average the asteroids are about a million kilometres apart.
You could line up 12,497 Earths side by side in the space you have crossed since آذار/مارس.
You are 17% of the way from سيريس to المشتري.
Still nothing. You have crossed 122 مليون km since سيريس.
The sunlight passing you now left the Sun 33 د 8 ث ago.
المشتري is still 122 مليون km ahead.
You could line up 23,846 Earths side by side in the space you have crossed since سيريس.
You are 10% of the way from المشتري to زحل.
Still nothing. You have crossed 130 مليون km since المشتري.
The sunlight passing you now left the Sun 54 د 5 ث ago.
زحل is still 389 مليون km ahead.
Voyager 1 took about 20 months to fly from Jupiter to Saturn.
You could line up 30,529 Earths side by side in the space you have crossed since المشتري.
You are 70% of the way from المشتري to زحل.
Still nothing. You have crossed 519 مليون km since المشتري.
The sunlight passing you now left the Sun 1 س 16 د ago.
أورانوس is still 1.31 مليار km ahead.
You could line up 20,605 Earths side by side in the space you have crossed since زحل.
You are 27% of the way from زحل to أورانوس.
Still nothing. You have crossed 525 مليون km since زحل.
Uranus orbits twice as far from the Sun as Saturn. The farther out you go, the emptier it gets.
The sunlight passing you now left the Sun 2 س 3 د ago.
أورانوس is still 525 مليون km ahead.
You could line up 82,418 Earths side by side in the space you have crossed since زحل.
You are 82% of the way from زحل to أورانوس.
Still nothing. You have crossed 1.31 مليار km since زحل.
The sunlight passing you now left the Sun 2 س 48 د ago.
نبتون is still 1.33 مليار km ahead.
You could line up 34,840 Earths side by side in the space you have crossed since أورانوس.
You are 36% of the way from أورانوس to نبتون.
Still nothing. You have crossed 740 مليون km since أورانوس.
Voyager 2 needed about three and a half years to cross this gap, from Uranus in 1986 to Neptune in 1989.
The sunlight passing you now left the Sun 3 س 37 د ago.
نبتون is still 444 مليون km ahead.
You could line up 104,519 Earths side by side in the space you have crossed since أورانوس.
You are 91% of the way from أورانوس to نبتون.
Still nothing. You have crossed 129 مليون km since نبتون.
The sunlight passing you now left the Sun 4 س 24 د ago.
The Kuiper belt: a ring of icy worlds so spread out that after Pluto, New Horizons flew close to just one of them.
بلوتو is still 906 مليون km ahead.
You could line up 50,798 Earths side by side in the space you have crossed since نبتون.
You are 55% of the way from نبتون to بلوتو.
Still nothing. You have crossed 906 مليون km since نبتون.
New Horizons, one of the fastest spacecraft ever launched, took nine and a half years to reach Pluto. Sunlight gets to Pluto's average distance in about five and a half hours.
The sunlight passing you now left the Sun 5 س 15 د ago.
بلوتو is still 129 مليون km ahead.
Scroll down inside the frame to fly outward, or start the autopilot below.
Journey's end
Look back. That bright star is the Sun.
جدول البيانات (نص بديل)
| العالم | القطر | المسافة من الشمس | زمن سفر الضوء من الشمس | px |
|---|---|---|---|---|
| الزئبق | 4,879 km | 0.387 au | 3 د 13 ث | 19,303 |
| الزهرة | 12,104 km | 0.723 au | 6 د 1 ث | 36,070 |
| الأرض | 12,742 km | 1 au | 8 د 19 ث | 49,866 |
| آذار/مارس | 6,779 km | 1.52 au | 12 د 40 ث | 75,981 |
| سيريس | 939 km | 2.77 au | 23 د 0 ث | 137,907 |
| المشتري | 139,822 km | 5.2 au | 43 د 16 ث | 259,447 |
| زحل | 116,464 km | 9.54 au | 1 س 19 د | 475,555 |
| أورانوس | 50,724 km | 19.2 au | 2 س 40 د | 956,886 |
| نبتون | 49,244 km | 30.1 au | 4 س 10 د | 1,499,465 |
| بلوتو | 2,377 km | 39.6 au | 5 س 29 د | 1,974,125 |
وتستخدم الأدوات والدروس نماذج مبسطة لأغراض التعلم فقط، ولا ينبغي استخدامها لأغراض الملاحة أو تخطيط البعثات أو اتخاذ أي قرار تشغيلي.() والشهادات مجانية وغير معتمدة. اقرأ إخلاء المسؤولية عن المحتوى التعليمي