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Latest News About Earth

 

The asteroid 2024 YR4 are dim in visible light, but the infrared light it gives off means the JWST will be a powerful tool to study it
Asteroid 2024 YR4’s odds of hitting Earth just got a lot smaller

February 20, 2025

New data dramatically shrank the odds that this asteroid will hit Earth, but astronomers will continue to study it Read more

Graphic illustrating Earth's core
Scientists accidentally discover Earth's inner core is less solid than expected

February 17, 2025

The new research could help us better understand our planet's thermal and magnetic fields Read more

A coronal mass ejection from August, 2012
Solar flares in May 2024 revealed Earth’s vulnerability to space weather

February 12, 2025

"The CMEs merged, amplifying one another, to create a major event" Read more

 

Fascinating Facts About Earth

  • If the sun were as tall as a typical front door, Earth would be the size of a nickel.
  • Earth completes an orbit of the Sun every 365.25 days; this is where the 366th day of the leap year comes from, and we add it to keep yearly calendars consistent with our orbit around the sun.
  • Earth is the only planet not named after a god or goddess.
  • Earth is different from the other rocky planets because 70 percent of its surface is covered in oceans. Although most of the Earth’s surface is covered in oceans, water only makes up 0.13% of the total volume of the planet. Hence, if Earth was the size of a basketball, all the water in the world would amount to two teaspoons.
  • Earth's atmosphere protects us from incoming meteoroids, most of which break up in our atmosphere before they can strike the surface as meteorites.
  • The first being to orbit the Earth was Laika the dog in 1957. A few years later, dogs Belka and Strelka became the first creatures to return from space alive.
  • Earth is the densest planet with a density of 5.52 grams per cubic centimeter. The density of water is 1 gram per cubic centimeter.

Missions

Ice, Clouds, and Land Elevation Satellite-2 (ICESat-2) (2018)
Mission to measure the height of a changing Earth

Soil Moisture Active Passive (2014)
Mission to provide soil moisture and freeze/thaw measurements

ISS-RapidScat (2014)
Mission to measure near-surface ocean wind speed and direction

Orbiting Carbon Observatory 2 (OCO-2) (2014)
Mission to study atmospheric carbon dioxide

Landsat 8 (2013)
Mission to monitor, understand and manage resources

Airborne Tropical Tropopause Experiment (ATTREX) (2013)
Mission to study moisture and chemical composition of upper atmosphere

Van Allen Probes (2012)
Mission to study Van Allen Radiation Belts around Earth

Suomi NPP (2011)
Mission to acquire land, ocean and atmospheric measurements

Glory (2011)
Mission to understand climate system

DISCOVER-AQ (2011)
Mission to measure difference in air quality in upper atmosphere and near surface

Aquarius (2011)
Mission to measure sea surface salinity

IceBridge (2009)
Mission to produce three-dimensional view of Arctic and Antarctic ice sheets

NOAA-N Prime (2009)
Mission to improve weather forecasting and monitor environmental events

ARCTAS (2008)
Mission to study effect of air pollution in the Arctic

CloudSat (2006)
Mission to study role of clouds and atmospheric aerosols in climate, weather and air quality regulation

Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) (2006)
Mission to study role of clouds and atmospheric aerosols in climate, weather and air quality regulation

SERVIR (2005)
Mission to provide monitoring, imaging and mapping data and geospatial information

NOAA-N (2005)
Mission to collect information about the atmosphere and environment

Aura (2004)
Mission to study chemistry and dynamics of the atmosphere

Ice, Clouds, and Land Elevation Satellite (ICESat) (2003)
Mission to understand effect of atmosphere and climate change on polar masses

Aqua (2002)
Mission to collect a variety of global data sets from six observation instruments

Jason (2001)
Mission to continue study of ocean surface topography

Terra (1999)
Mission to collect observational data of Earth

Tropical Rainfall Measuring Mission (TRMM) (1997)
Mission to study rainfall for weather and climate research

Upper Atmosphere Research Satellite (UARS) (1991)
Mission to study role of upper atmosphere in varying climate

Tracking and Data Relay Satellites (1983)
Network of specialized communications satellites to provide communication services to NASA spacecraft

Geostationary Operational Environmental Satellite (GOES) (1975)
Mission to help meteorologists predict local weather events

Polar Orbiting Environmental Satellite (POES) (1960)
Mission to provide operational climate data

More Earth missions

 

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