I. What is Space Weather? Space weather refers to the environmental conditions in space as influenced by the sun and the solar wind. These conditions can have a significant impact on spacecraft and astronauts in space. Space weather is primarily driven by solar activity, including solar flares, coronal mass ejections, and solar wind. These phenomena … Read more
I. What is the Cosmological Principle? The Cosmological Principle is a fundamental concept in cosmology that states that the universe is homogeneous and isotropic on a large scale. In other words, it asserts that the universe looks the same from any vantage point and that there are no preferred locations or directions in space. This … Read more
I. What is Dark Matter Direct Detection? Dark matter is a mysterious substance that makes up about 27% of the universe, yet it does not emit, absorb, or reflect any electromagnetic radiation, making it invisible and undetectable by traditional means. Dark matter direct detection is a method used by scientists to try and detect the … Read more
Discover how far the Deep Space Network can reach, what defines its range, and the technical limits that shape deep-space communication.
Learn how NASA’s Deep Space Network keeps Mars rovers connected, commanded, and scientifically productive across millions of miles.
What is Solar Maximum? Solar Maximum is a period in the 11-year solar cycle when the Sun’s activity is at its peak. During this time, the Sun experiences an increase in sunspots, solar flares, and coronal mass ejections. These phenomena are all indicators of heightened solar activity, which can have various effects on Earth and … Read more
Discover how robotic spacecraft gather rock, soil, ice, and dust from distant worlds using drills, scoops, arms, and return capsules.
Mars communications are delayed by physics, distance, and the speed of light, not by equipment failure.
Learn how NASA follows spacecraft across the solar system using antennas, navigation data, and powerful deep space communication networks.
Learn how Mars rovers move, power themselves, navigate, and analyze Martian rock and soil on the Red Planet.