eastbound on Tolt Pipeline Trail
- Binary Star § Astrometric binaries (Wikipedia)
Astronomers have discovered some stars that seemingly orbit around an empty space. Astrometric binaries are relatively nearby stars which can be seen to wobble around a point in space, with no visible companion. The same mathematics used for ordinary binaries can be applied to infer the mass of the missing companion. The companion could be very dim, so that it is currently undetectable or masked by the glare of its primary, or it could be an object that emits little or no electromagnetic radiation, for example a neutron star.
Washington Trails Association
- Greenbrier Trail (wta.org)
Try this less than 2-mile hike, built by WTA crews, through palustrine (inland, non-tidal) wetland. It’s a great outing for kids and dogs, as well as walking folks of all abilities, due to its soft surface and gently rolling hills.
- Sammamish River Trail (wta.org)
The Sammamish River Trail is a 9.5-mile trail with one end at Marymoor Park in Redmond, passing through Woodinville, and the other end at Blythe Park in Bothell. At Blyth Park, it connects with the Burke-Gilman Trail and continues another 18.8 miles ending at Golden Gardens in Seattle.
- Tolt Pipeline Trail (wta.org)
The Tolt pipeline provides water to the City of Seattle and runs from the Tolt Reservoir in the Cascades to the Lake Forest Park Reservoir. The pipeline passes though Seattle’s northern Eastside suburbs, and the pipeline’s 100-foot-wide right-of-way has been converted in part to a non-paved, multi-use trail for equestrians, dog walkers, mountain bikers, joggers, and hikers. The trail runs 12 miles from Duvall to Bothell.
wastewater treatment plant
- Woodinville, Washington (Wikipedia)
Woodinville is a city in King County, Washington, United States. The population was 13,069 at the 2020 census. It is a part of the Seattle metropolitan area and is east of Bothell. Woodinville has waterfront parks on the Sammamish River, a winery district, and industrial areas along State Route 522.