Pluto and Dwarf Planet Resources - NASA Science
2024年11月5日 · Learn more about Pluto and other dwarf planets, which are defined as objects that orbit the Sun and are nearly round, but that have not been able to clear their orbit of debris. The International Astronomical Union (IAU) has recognized five dwarf planets: Pluto, Ceres, Haumea, Makemake, and Eris.
Discovery Alert: New Twin Planets Prompt Comparisons to Earth
2019年6月12日 · Key facts: Two new planets were detected orbiting Teegarden's Star, an ultracool, red dwarf less than 13 light-years away. At a minimum, the new planets both weigh in at about 1.1 times the mass of Earth.
Discovery Alert: See the Image – 2 Planets Orbit a Sun-like Star
2020年7月23日 · Key facts: These two planets – TYC 8998-760-1 b and now, c – are considered the first multi-planet system to be directly imaged around a Sun-like star. The star is a baby version of our Sun, only 17 million years old.
Discovery Alert: 2-planet System Is Close – and Weird
2019年10月10日 · The discovery: GJ 15 A b and c orbit a red-dwarf star just 11 light-years away, making them our nearest multi-planet neighbors – at least among the exoplanet systems discovered so far.
Stories - NASA Science
Using computer simulations, scientists based at NASA have pieced together the story of how the dwarf planet Haumea, found in the Kuiper Belt of icy worlds beyond the orbit of outermost planet Neptune, became one of the most unusual objects…
“Berries” on the Ground 2 (3-D) - Science@NASA
2004年2月12日 · This is the 3-D anaglyph showing a microscopic image taken of soil featuring round, blueberry-shaped rock formations on the crater floor at Meridiani Planum, Mars. This image was taken on the 13th day of the Mars Exploration Rover Opportunity's journey, after the Moessbauer spectrometer, an instrument located on the rover's instrument deployment device, or "arm," was pressed down to measure ...
Two Exoplanets May Be Mostly Water, NASA’s Hubble and Spitzer …
2022年12月15日 · A team led by researchers at the University of Montreal has found evidence that two exoplanets orbiting a red dwarf star are “water worlds,” where water makes up a large fraction of the entire planet. These worlds, located in a planetary system 218 light-years away in the constellation Lyra, are unlike any planet found in our solar system.
7 Canis Majoris b - NASA Science
7 Canis Majoris b is a gas giant exoplanet that orbits a K-type star. Its mass is 1.85 Jupiters, it takes 2 years to complete one orbit of its star, and is 1.758 AU from its star. Its discovery was announced in 2011.
PSR B1257+12 b - NASA Science
2024年10月24日 · PSR B1257+12 b, along with fellow doomed worlds, were among the first and creepiest to be discovered as they orbit an undead star known as a pulsar. Pulsar planets like Poltergeist and its neighboring worlds, Phobetor and Draugr, are consumed with constant radiation from the star’s core.
NASA-Funded Study Examines Tidal Effects on Planet and Moon …
2024年11月7日 · NASA-supported scientists have developed a new method to compute how tides affect the interiors of planets and moons. Importantly, the new study looks at the effects of body tides on objects that don’t have a perfectly spherical interior structure, which is an assumption of most previous models.