9th Grade Science Resources

Solar System Formation

How Did the Solar System Form?

solar-system-snap-8.5x13.pdf

Ask an Astronomer: What is the age of the universe?

Age of Solar System Needs to Be Recalculated

How Science Figured Out the Age of EarthFor centuries scholars sought to determine Earth’s age, but the answer had to wait for careful geologic observation, isotopic analyses of the elements and an understanding of radioactive decay

USGS: Age of the Earth

How Do We Know the Earth Is 4.6 Billion Years Old?We know the Earth is old. But how do we know its age?

The Only Three Heavy Elements In The Universe That Aren't Made In StarsImmediately after the Big Bang, before the first stars in the Universe ever formed, the Universe consisted of hydrogen (element #1), helium (element #2), and pretty much nothing else. Despite originating from an incredibly hot, dense state, arbitrarily heavy elements weren't created early on the same way they're made today in [...]

Ask an Astronomer: How are Heavy and Light Elements Formed?

Khan AcademyLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

How the Solar System Was Formed

Khan AcademyLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

Models of the Solar System

The Solar System

Report abuse