Source: NASAA day on Earth is 24 hours. Earth makes a complete orbit around the sun (a year in Earth time) in about 365 days.
Search found 97 matches
- Fri Jan 15, 2021 3:00 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Earth
- Replies: 9
- Views: 3943
Earth: As the World Turns
- Fri Jan 15, 2021 2:59 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Earth
- Replies: 9
- Views: 3943
Earth: Third Rock
Source: NASAEarth orbits our Sun, a star. Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km).
- Fri Jan 15, 2021 2:57 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Earth
- Replies: 9
- Views: 3943
Earth: Measuring Up
Source: NASAIf the Sun were as tall as a typical front door, Earth would be the size of a nickel.
- Fri Jan 15, 2021 2:55 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Super Rotating Atmosphere
Source: NASAWhile the surface rotates slowly, the winds blow at hurricane force, sending clouds completely around the planet every five days.
- Fri Jan 15, 2021 2:54 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Life on Venus
Source: NASAVenus’ extreme temperatures and acidic clouds make it an unlikely place for life as we know it.
- Fri Jan 15, 2021 2:53 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Many Visitors
Source: NASAMore than 40 spacecraft have explored Venus. The ‘90s Magellan mission mapped the planet's surface and Akatsuki is currently orbiting Venus.
- Fri Jan 15, 2021 2:52 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Water on Venus
Source: NASAMany scientists believe water once existed on the surface. Future Venus explorers will search for evidence of an ancient ocean.
- Fri Jan 15, 2021 2:51 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Greenhouse Effect
Source: NASAThe planet’s surface temperature is about 900 degrees Fahrenheit (465 degrees Celsius)—hot enough to melt lead.
- Fri Jan 15, 2021 2:50 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Moonless and Ringless
Source: NASAVenus has no moons and no rings.
- Fri Jan 15, 2021 2:48 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Diverse Terrain
Source: NASAVenus' solid surface is a volcanic landscape covered with extensive plains featuring high volcanic mountains and vast ridged plateaus.
- Fri Jan 15, 2021 2:46 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: A Day Longer Than a Year
Source: NASAOne day on Venus lasts 243 Earth days because Venus spins backwards, with its sun rising in the west and setting in the east.
- Fri Jan 15, 2021 2:44 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Second Rock
Source: NASAVenus orbits our Sun, a star. Venus is the second closest planet to the sun at a distance of about 67 million miles (108 million km).
- Fri Jan 15, 2021 2:43 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Venus
- Replies: 12
- Views: 6628
Venus: Earth-Sized
Source: NASAIf the sun were as tall as a typical front door, the Earth and Venus would each be about the size of a nickel.
- Fri Jan 15, 2021 2:19 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Robotic Visitors
Source: NASAThe two spacecraft of ESA-JAXA's BepiColombo are en route to Mercury. NASA's Mariner 10 was the first mission to explore Mercury. NASA's MESSENGER was the first to orbit the innermost planet.
- Fri Jan 15, 2021 2:18 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Big Sun
Source: NASAStanding on Mercury's surface at its closest approach to the Sun, our star would appear more than three times larger than it does on Earth.
- Fri Jan 15, 2021 2:17 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Tough Place to Live
Source: NASANo evidence for life has been found on Mercury. Daytime Temperatures can reach 430 degrees Celsius (800 degrees Fahrenheit) and drop to -180 degrees Celsius (-290 degrees Fahrenheit) at night. It is unlikely life (as we know it) could survive on this planet.
- Fri Jan 15, 2021 2:15 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Ringless
Source: NASAThere are no rings around Mercury.
- Fri Jan 15, 2021 2:14 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Moonless
Source: NASAMercury has no moons.
- Fri Jan 15, 2021 2:13 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Can't Breathe It
Source: NASAMercury's thin atmosphere, or exosphere, is composed mostly of oxygen (O2), sodium (Na), hydrogen (H2), helium (He), and potassium (K). Atoms that are blasted off the surface by the solar wind and micrometeoroid impacts create Mercury's exosphere.
- Fri Jan 15, 2021 2:12 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Rough Surface
Source: NASAMercury is a rocky planet, also known as a terrestrial planet. Mercury has a solid, cratered surface, much like the Earth's moon.
- Fri Jan 15, 2021 2:11 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Long Days, Short Years
Source: NASAOne day on Mercury (the time it takes for Mercury to rotate or spin once with respect to the stars) takes 59 Earth days. One day-night cycle on Mercury takes 175.97 Earth days. Mercury makes a complete orbit around the Sun (a year in Mercury time) in just 88 Earth days.
- Fri Jan 15, 2021 2:10 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Insider
Source: NASAIt is the closest planet to the Sun at a distance of about 36 million miles (58 million kilometers) or 0.39 AU.
- Fri Jan 15, 2021 2:09 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Mercury
- Replies: 12
- Views: 7202
Mercury: Smallest
Source: NASAMercury is the smallest planet in our solar system—only slightly larger than Earth's Moon.
- Fri Jan 15, 2021 2:07 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Jupiter
- Replies: 17
- Views: 7439
Jupiter: Super Storm
Source: NASAJupiter's Great Red Spot is a gigantic storm that’s about twice the size of Earth and has raged for over a century.
- Fri Jan 15, 2021 2:06 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Jupiter
- Replies: 17
- Views: 7439
Jupiter: Ingredients for Life
Source: NASAJupiter cannot support life as we know it. But some of Jupiter's moons have oceans beneath their crusts that might support life.