I really wanted to be an astronaut. Be in orbit, watching the Earth from afar… Alice Wow! Be in orbit - it means: be in space and following the Earth's curvature. Well, theview must be nice from up there. But the reality ...
This kind of study is growing more urgent. Some 15 years ago, barely a thousand satellites orbited our planet. Now the number has risen to about 10,000, and with the rise of satellite constellations like Starlink, another tenfold increase is forecast by the end of this decade. Letting the...
When the comet was first sighted, it was far out beyond the orbit of Jupiter, some 680 million miles (1.09 billion km) from the sun. But on Sept. 27 of this year, Tsuchinshan–ATLAS will be making its closest approach to the sun, coming to within 36 million miles (58 million km)....
Kamo`oalewa is uncommon in that it is Earth’s quasi-satellite, a term used for asteroids whose orbits are so Earth-like that they appear to orbit Earth even though they actually orbit the sun. The other peculiar aspect of Kamo`oalewa is how long it has been in this type...
The environmental impacts of spaceflight are becoming increasingly clear as more and more spacecraft are launched into Earth's orbit. The growing number of satellites burning up in Earth's atmosphere has concerned scientists for years, and now a new paper explores how the emerging shell of "condu...
A terrestrial planet candidate in a temperate orbit around Proxima Centauri. Nature, 536, 437–440. Article Google Scholar Arrhenius, S. (1908). Worlds in the making: The evolution of the universe. Harper and Brothers. Google Scholar Aulbach, S., & Stagno, V. (2016). Evidence for a ...
These bigger and brighter Full Moons occur when the Moon is near the closest approach to Earth (perigee) in its elliptical orbit. The closest of these is known as the Perigee Supermoon. A micromoon is the opposite. It's a Full Moon that occurs when the Moon is close...
of Cassini during the Saturn Orbit Insertion maneuver, just after the main engine has begun firing. The spacecraft is moving out of the plane of the page and to the right (firing to reduce its spacecraft velocity with respect to Saturn) and has just crossed the ring plane. Credit: NASA/...
Per NOAA’s statement, the geomagnetic activity could degrade GPS-related navigation, stress power grids and disrupt communications systems that rely on low-Earth orbit satellites. NOAA contacted North American power grid operators to warn them about the impending storm, Dahl...
aSome key questions: How big is it? How long is its year (the time it takes to orbit around its star)? How much would you weigh if you were there?[translate] aFrom its mass and radius (the distance across the planet) scientists can figure out the density of the planet—whether it...