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Monitoring shows improved oxygen levels in Chesapeake Bay

Oakton High School students launch high-powered rocket to 34,195 feet — higher than many airplanes

NASA is sending a high-tech ‘message in a bottle’ to Jupiter. Here’s how you can add your name

How to watch this weekend’s Leonid Meteor Shower

DC high school students share experiences ‘Through My Anacostia Eyes’

PHOTOS: Rare space phenomenon lights up sky at Shenandoah National Park

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Northern Lights may be visible in DC area Sunday night

Turning last night’s jack-o’-lantern into compost, and other morning-after pumpkin options

National Air and Space Museum to host annual ‘Air and Scare’ Halloween event in Chantilly

The Hunter’s moon and Jupiter will dazzle skywatchers Saturday night

University of Michigan slithers toward history with massive acquisition of jarred snake specimens

The Orionids are here as is Observe the Moon Night

Put that rake down: How falling leaves help your yard

Virginia teen named ‘America’s Top Young Scientist’ for skin cancer-fighting soap

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October 14

PHOTOS: ‘Ring of Fire’ solar eclipse doesn’t disappoint

A ‘Ring of Fire’ solar eclipse will cross the US this weekend. Here’s what you need to know

Super Harvest Full Moon to shine down on DC area Thursday and Friday

What’s in store for skywatchers this fall? Planets galore and the moon’s shadow

The outlook for colorful fall foliage in the DC area? Not spectacular — and short-lived

Rare and aggressive: Understanding the skin cancer that took Jimmy Buffett’s life

Howard Co. is first in Maryland to give paramedics ability to do blood transfusions

‘Major fireball event’ visible across DC region

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August 31

PHOTOS: World gazes in wonder at rare ‘full super blue moon’

A super sky show Wednesday night: How to catch the ‘full super blue moon’