European astronomers have performed photometric and spectroscopic observations of a distant giant exoplanet known as TOI-837 b. As a result, they found that TOI-837 b is a young Saturn-sized planet containing a massive core, ...
The future of space-based UV/optical/IR astronomy requires ever larger telescopes. The highest priority astrophysics targets, including Earth-like exoplanets, first generation stars, and early galaxies, are all extremely ...
Astronomy
May 2, 2024
2
51
Two NASA pathfinding missions were recently deployed into low-Earth orbit, where they are demonstrating novel technologies for observing atmospheric gases, measuring freshwater, and even detecting signs of potential volcanic ...
Planetary Sciences
May 2, 2024
0
16
A new study led by researchers at Durham University has uncovered a novel mechanism that could solve a long-standing mystery about decaying planetary orbits around stars like our sun.
Planetary Sciences
Apr 29, 2024
0
348
I first encountered the three-body problem 60 years ago, in a short story called "Placet is a Crazy Place" by American science fiction writer Frederic Brown.
Planetary Sciences
Apr 28, 2024
0
31
A spaceship carrying three astronauts from China's Shenzhou-18 mission safely docked at Tiangong space station Friday, state-run media reported, the latest step in Beijing's space program that aims to send astronauts to the ...
Space Exploration
Apr 26, 2024
0
6
NASA has developed an advanced propulsion technology to facilitate future planetary exploration missions using small spacecraft. Not only will this technology enable new types of planetary science missions, one of NASA's ...
Space Exploration
Apr 24, 2024
1
66
China's space agency is making final preparations to send a new crew to its space station on Thursday as part of its ambitious program that aims to put people on the moon by 2030.
Space Exploration
Apr 24, 2024
0
11
A new research study from Opto-Electronic Advances discusses tailoring electron vortex beams with customizable intensity patterns by electron diffraction holography.
Optics & Photonics
Apr 23, 2024
0
33
CloudSat, a NASA mission that peered into hurricanes, tallied global snowfall rates, and achieved other weather and climate firsts, has ended its operations. Originally proposed as a 22-month mission, the spacecraft was recently ...
Earth Sciences
Apr 23, 2024
0
12
In physics, an orbit is the gravitationally curved path of one object around a point or another body, for example the gravitational orbit of a planet around a star.
Historically, the apparent motion of the planets were first understood in terms of epicycles, which are the sums of numerous circular motions. This predicted the path of the planets quite well, until Johannes Kepler was able to show that the motion of the planets were in fact elliptical motions.[citation needed] Isaac Newton was able to prove that this was equivalent to an inverse square, instantaneously propagating force he called gravitation.[citation needed] Albert Einstein later was able to show that gravity is due to curvature of space-time, and that orbits lie upon geodesics. This is the current understanding.
This text uses material from Wikipedia, licensed under CC BY-SA
