All articles A–Z
519,064 articles
HIP 66074
HIP 66074 (G255-34A) is a mid-K dwarf 116 light-years away in Ursa Minor hosting HIP 66074 b (Gaia-3b), a 5-Jupiter-mass gas giant on a 310.9-day, e=0.948 orbit, the first Gaia astrometric planet confirmed by radial velocities.
HIP 67522
HIP 67522 (HD 120411) is a 17-million-year-old Sun-like star about 415 light-years away in Scorpius-Centaurus with two transiting planets, b (6.96 d) and c (14.33 d), near 2:1 resonance; b is a low-density super-puff that appears to trigger stellar flares.
HIP 67851
HIP 67851 (HD 121056), K0 III giant star in Centaurus about 209 light-years away, hosts two radial-velocity giant planets announced in 2015: a 89-day Jupiter-mass planet and an eccentric 8.6-year several-Jupiter-mass planet in its habitable zone.
HIP 77900
HIP 77900 is a B-type star about 492 light-years away in the Upper Scorpius association; its directly imaged gas-giant companion HIP 77900 b (21 Jupiter masses, 3319 AU separation) was confirmed in 2024 from Gaia data.
HIP 78530
HIP 78530 (HD 143567) is a young B9 V star of ~2.5 solar masses in Upper Scorpius, ~137 pc away, hosting the directly imaged ~23-Jupiter-mass brown-dwarf companion HIP 78530 b at ~620-740 AU, discovered in 2010.
HIP 81208 C
HIP 81208 C is a 0.135-solar-mass M-type star orbiting the B9V star HIP 81208 A at ~222 au, found by SPHERE/VLT imaging in 2023; it hosts the imaged ~15-Jupiter-mass brown dwarf HIP 81208 C b in a hierarchical quadruple system.
HIP 8152
HIP 8152 (TOI-266) is an inactive G dwarf about 102 pc away with twin transiting sub-Neptunes b (10.75 d, 2.56 R_Earth) and c (19.61 d, 2.48 R_Earth), discovered in 2023 by the TESS-Keck Survey, orbits near 2:1 resonance.
HIP 8541
HIP 8541 (HD 11343) is a wide binary in Eridanus about 500 light-years away: a K2 giant primary with a late-K dwarf companion at ~2,600 AU, hosting two radial-velocity gas giants, HIP 8541 b (2016) and HD 11343 c (2022).
HIP 94235
HIP 94235 (HD 178085, TOI-4399) is a young 120-Myr G-dwarf 58.5 pc away in the AB Doradus group, hosting the transiting mini-Neptune HIP 94235 b (7.7-day orbit) and M-dwarf companion HIP 94235 B in a ~50 AU binary.
HIP 9618
HIP 9618 (HD 12572, TOI-1471) is a bright Sun-like star 220 light years away with two confirmed warm Neptune transiting planets, b (20.77 d) and c (52.56 d), found by TESS and CHEOPS in 2023.
HIP 97166
HIP 97166 is a K0 dwarf about 68 parsecs away with two confirmed eccentric sub-Neptune-mass planets, HIP 97166 b (TOI-1255 b, transiting, 10.3-day period) and non-transiting HIP 97166 c, discovered in 2021 by the TESS-Keck Survey.
Hip arthroscopy
Hip arthroscopy is a keyhole surgical procedure of the hip joint, performed mainly for femoroacetabular impingement; about 50,000 are done annually in the United States.
Hip bone
Hip bone (os coxae, innominate bone): large irregular pelvic bone of three fused parts, ilium, ischium, pubis, forming the acetabulum; the skeleton's most sexually dimorphic bone, used in forensic sex determination.
Hip dysplasia, Beukes type
Hip dysplasia, Beukes type, or Beukes familial hip dysplasia, is a rare autosomal dominant bone dysplasia causing early hip arthritis, first described in a South African family.
Hip fracture
Hip fracture: break of the upper femur between the femoral head and 5 cm below the lesser trochanter, usually from a fall in older adults; treated with surgery, fixation or arthroplasty, with high mortality and disability burden.
Hip hop dance
Hip hop dance covers street dance styles like breaking, locking, popping, and house that arose in US hip hop culture from the late 1960s, originating in 1970s Bronx parties and now spanning battles, syllabi, and Olympic breaking.
Hip Hop Evolution
Hip-Hop Evolution is a Canadian documentary series (2016-2020, HBO Canada and Netflix) hosted by rapper Shad, directed by Darby Wheeler for Banger Films, tracing hip-hop history from the 1970s Bronx to the 2000s across four seasons, and winning a Peabody Award and International Emmy.
Hip Hop Is Dead
Hip Hop Is Dead is Nas's eighth studio album, released December 19, 2006 on Def Jam. Inspired by De La Soul Is Dead, it sparked a lasting debate about commercialism in hip-hop and earned a Metacritic score of 79.
Hip osteoarthritis
Hip osteoarthritis, also called coxarthrosis, is degenerative arthritis of the hip joint affecting roughly 8.55% of people worldwide, often linked to cam deformity or acetabular dysplasia.
Hip pain
Hip pain: pain in or around the hip joint, also called coxalgia. Causes range from fracture, bursitis, and tendonitis to osteoarthritis; groin pain suggests joint disease, outer hip pain soft tissue.
Hip Prosthesis
Hip prosthesis: artificial hip joint implant (femoral stem, ball, acetabular cup, liner) used in total hip arthroplasty; defined by Charnley's low friction arthroplasty with PMMA cement, 22.25 mm head, and polyethylene cup.
Hip protector
Hip protector: padded or hard-shell undergarment pads worn over the greater trochanter to prevent hip fractures from falls in older adults; effective in nursing homes (RR about 0.7-0.8), ineffective in community-dwelling people, limited by poor adherence.
Hip replacement
Hip replacement (total hip arthroplasty) replaces the damaged hip ball and socket with metal, plastic, or ceramic implants, mainly for osteoarthritis. Originated in Charnley's 1962 low-friction arthroplasty; over 450,000 performed yearly in the US; implants last at least 15 years.
Hip resurfacing
Hip resurfacing is a hip arthritis operation that caps the femoral head with a metal shell instead of removing it, preserving bone and suiting younger, active patients.
Hip roof
A hip roof, also known as a hipped roof, is a pitched roof in which every side slopes down toward the walls, leaving no vertical gable ends and performing better in high wind.
Hip strategy
The hip strategy is a balance-recovery technique using hip-joint torque instead of ankle torque, one of three classical postural strategies and a named control mode in humanoid robotics.
HIP1 in prostate cancer
HIP1 (huntingtin-interacting protein 1) is a 116-kD endocytic adaptor protein overexpressed in prostate tumor cells but not benign tissue, where it independently predicts PSA recurrence after surgery.
HiPEP
HiPEP (High Power Electric Propulsion) is a high-power gridded ion thruster developed by a NASA Glenn Research Center-led team for the proposed Jupiter Icy Moon Orbiter mission.
HiperLAN
HiperLAN, short for High Performance European Radio Local Area Network, is a family of wireless LAN standards by ETSI that never saw significant commercial deployment.
Hipgnosis
Hipgnosis: British album-cover design studio founded 1968 in London by Storm Thorgerson and Aubrey Powell; made surreal photodesigns for Pink Floyd, Led Zeppelin, and 10cc until 1983; unrelated to Hipgnosis Songs Fund.