Planets
How many known moons does Jupiter have?
As of March 16, 2026, Jupiter has 101 known moons.
What is the largest moon?
Ganymede, Ganymede is a natural satellite of Jupiter and is the largest and most massive moon in the Solar System. Like Saturn's largest moon Titan, it is larger than the planet Mercury, but has somewhat less surface gravity than Mercury, Io, or Earth's Moon due to its lower density compared to the three.[18] Ganymede orbits Jupiter in roughly seven days and is in a 1:2:4 orbital resonance with the moons Europa and Io, respectively.
How many well known dwarf planets are there?
Bonus points if you name them
5, Ceres, Pluto, Haumea, Makemake, Eris.
Which moon rotates backwards?
Triton, Neptune's moon.
What are stars?
Stars are massive balls of hot gas, primarily hydrogen and helium, that generate energy through nuclear fusion, shining brightly for billions of years.
May there maybe be a 9th planet?
True or false
Planet Nine is a hypothetical planet in the outer Solar System, proposed to explain the unusual orbital clustering of distant Kuiper Belt objects. It is not yet directly observed, but its existence is supported by mathematical modeling and gravitational evidence.
True!
Who is Ganymedes planet?
Jupiter, Ganymede is Jupiter's largest moon.
When did Pluto become a dwarf planet?
August 24, 2006
Which Planet rotates on it's side?
Uranus
A star begins to form when a collapsing cloud of gas and dust reaches a core temperature of about 10 million Kelvin (≈10 million °C), which is roughly 20 million °F www1.phys.vt.edu+1. At this point, the pressure and density in the core become high enough for nuclear fusion of hydrogen nuclei (protons) to start.
What is Neptunes tempurature?
Neptune has an average atmospheric temperature of approximately −214°C (−353°F), making it one of the coldest planets in the Solar System, while its core can reach up to 7,000°C (12,632°F).
What is Earth's moon called in Spanish?
The Earth’s moon is called “la luna” in Spanish
n Spanish, luna is a feminine noun, so the definite article is “la” when referring to the moon.
Where do the dwarf planets orbit?
Most dwarf planets orbit in the outer solar system beyond Neptune, with Ceres as the only dwarf planet in the inner solar system.
Which dwarf planet doesn't have any moons?
Makemake
How long does it take to have a star form?
It takes millions of years for a star to form, with the exact time depending on its mass. For a star like our Sun, the process typically lasts about 30 to 50 million years from the start of gravitational collapse to the point where stable hydrogen fusion begins
What's the order of the planets?
The eight planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Who is Earth's moon named after in Greek Mythology?
In ancient Greek mythology, the Moon was personified as the goddess Selene (Greek: Σελήνη), also known as Mene (μήνη), meaning “moon” or “lunar month” Wikipedia. Selene was a Titan goddess, the daughter of the Titans Hyperion and Theia, and the sister of the sun god Helios and the dawn goddess Eos
When was the dwarf planet Eris discovered?
Eris was discovered on January 5, 2005.
Does Earth's moon have gravity?
Yes, the Moon has gravity, but it is about 1/6th as strong as Earth's gravity.
Where are stars mostly formed?
Stars are primarily formed in dense regions of molecular clouds, known as stellar nurseries, scattered throughout the Milky Way.
What is Saturn's mass?
Io, one of Jupiter’s four large moons (the Galilean moons), is named after Io, a figure from Greek mythology. In the myth, Io was a mortal woman who became the lover of Zeus (Jupiter in Roman mythology). To hide her from Zeus’s jealous wife, Hera, Io was transformed into a cow. She was then guarded by a hundred-eyed monster, but Zeus sent a warrior to slay it. Afterward, Io was turned back into a woman and gave birth to a child
What are some of the less known dwarf planets?
While Ceres, Pluto, Eris, Haumea, and Makemake are the five officially recognized dwarf planets by the IAU, many other icy bodies in the outer solar system are considered candidates. These “less-known” dwarf planets are often smaller, less studied, and located in distant regions like the Kuiper Belt, scattered disk, or detached orbits.
10 Hygiea, Orcus, 28978 Ixion, 120347 Salacia, Quaoar, Gonggong, 2012 VP113, Sedna, 2003 AZ84.
Why do the planets orbit the sun?
Planets orbit the Sun because the Sun’s gravity pulls them inward while their forward motion carries them sideways, creating a stable, curved path around the Sun.
What gasses are needed to make a star?
The primary gas needed to create a star is hydrogen, which serves as the fundamental building block for stellar formation through nuclear fusion.