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Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
2008-02-25 01:15 Dream out loud 1500×1501× (557188 bytes) replaced image of Pluto with plain circle since [[:Image:Pluto.jpg]] is non-free 2006-03-20 05:15 Brian0918 1500×1501× (733277 bytes) Rough comparison of the sizes of Earth and Pluto.
This new view of Pluto's crescent stunningly highlights the dwarf planet's varied terrains, extended atmosphere and familiar Arctic look. NASA releases stunning new 'Earth-like' images of Pluto ...
It would then take a further 4–24 minutes for commands to travel from Earth to Mars. [83] [84] Receiving light and other signals from distant astronomical sources takes much longer. For example, it takes 13 billion (13 × 10 9) years for light to travel to Earth from the faraway galaxies viewed in the Hubble Ultra-Deep Field images.
NASA's New Horizons team has just revealed the most detailed images of Pluto yet, and the space agency is ecstatic about what it has seen: a smooth, young, and active surface on what had been ...
There’s also round-trip light time—that’s how long it takes a command to go from Earth to the spacecraft and back. In order to receive data on Earth, you have to command the spacecraft to start sending it 4.5 hours earlier. Likewise, if you want to send something, you have to send it to a point the spacecraft is going to be in 4.5 hours.
The motion and long distances between planets: The interplanetary communication is greatly delayed due to the interplanetary distances and the motion of the planets. The delay is variable and long, ranging from a couple of minutes (Earth-to-Mars), to a couple of hours (Pluto-to-Earth), depending on their relative positions.
Celebrate Earth Day 2024 with these inspiring sayings about honoring nature and the environment. Share famous quotes from world leaders, activists and writers.