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18 hours ago · The flyby anomaly is a discrepancy between current scientific models and the actual increase in speed (i.e. increase in kinetic energy) observed during a planetary flyby (usually of Earth) by a spacecraft. In multiple cases, spacecraft have been observed to gain greater speed than scientists had predicted, but thus far no convincing explanation has been found.
18 hours ago · From Earth, it would be possible to pick up such signals at distances of up to 35 + (t_f - 2000) / 2, where t_f is the observation date in years, knowing that t_f ≥ 2000. [21] However, there are many techniques for transmitting an interstellar message, ranging from bosons to particles and even antiparticles .
18 hours ago · This is a list of exoplanets within the circumstellar habitable zone that are under 10 Earth masses and smaller than 2.5 Earth radii, and thus have a chance of being rocky. [ 3 ] [ 1 ] Note that inclusion on this list does not guarantee habitability, and in particular the larger planets are more unlikely to have a rocky composition. [ 4 ]
18 hours ago · The actual Hill radius for the Earth-Moon pair is on the order of 60,000 km (i.e., extending less than one-sixth the distance of the 378,000 km between the Moon and the Earth). [9] In the Earth-Sun example, the Earth (5.97 × 10 24 kg) orbits the Sun (1.99 × 10 30 kg) at a distance of 149.6 million km, or one astronomical unit (AU). The Hill ...
18 hours ago · Earth's energy imbalance (EEI) was about 0.7 W/m 2 as of around 2015, indicating that Earth as a whole is accumulating thermal energy and is in a process of becoming warmer. [ 22 ] : 934 Over 90% of the retained energy goes into warming the oceans, with much smaller amounts going into heating the land, atmosphere, and ice.
4 hours ago · With Planet Coaster 2 on the horizon, let's chill out and play some planet coaster!---DONATE [if you fancy it ;)] https://streamlabs.com/themeparkforce/tip-...
18 hours ago · A Green Lantern from an unnamed planet who leads a team of monstrous-appearing superheroes to Earth in pursuit of Sinestro's duplicate power ring and battery. Initially masquerading as a mysterious robed ghoul, he is a bald humanoid with chalk-white skin, and first appears in Super Friends #10, created by writer E. Nelson Bridwell and artist Ramona Fradon .
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